Web \u958b\u767a\u3092\u3057\u3066\u3044\u308b\u3068\u907f\u3051\u3066\u306f\u901a\u308c\u306a\u3044\u8a00\u8a9e\u304c JavaScript \u3067\u3059\u3002<\/p>\n\n\n\n
\u4eba\u306b\u3088\u3063\u3066\u306f\u5ac1\u304b\u3068\u8a00\u308f\u3093\u3070\u304b\u308a\u306b\u3001\u6301\u3066\u308b\u611b\u3068\u6642\u9593\u306e\u5168\u3066\u3092\u6ce8\u304e\u8fbc\u3080\u8a00\u8a9e\u3067\u3059\u306d\u3002
\u4e16\u306e\u3064\u3088\u3064\u3088\u30a8\u30f3\u30b8\u30cb\u30a2\u304c JavaScript \u3068\u611b\u3057\u5408\u3063\u3066\u3044\u308b\u8a18\u4e8b\u3092\u898b\u3066\u3082\u6b63\u76f4\u4f55\u3092\u8a00\u3063\u3066\u3044\u308b\u304b\u5206\u304b\u3089\u306a\u3044\u3053\u3068\u3082\u3057\u3070\u3057\u3070\u3067\u3059\u3002<\/p>\n\n\n\n
\u7247\u3084\u50d5\u306f\u3069\u3061\u3089\u304b\u3068\u3044\u3046\u3068\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067 PHP \u3084 SQL \u3092\u3053\u306d\u304f\u308a\u56de\u3057\u3066\u3044\u308b\u3053\u3068\u306e\u65b9\u304c\u591a\u3044\u306e\u3067\u3001JavaScript \u306e\u3053\u3068\u306f\u305d\u3053\u305d\u3053\u597d\u304d\u3067\u3059\u304c\u3001\u304a\u307c\u308d\u3052\u306a\u5916\u898b\u3060\u3051\u3057\u304b\u77e5\u3089\u306a\u3044\u3067\u4ed5\u4e8b\u3092\u3057\u3066\u304d\u307e\u3057\u305f\u3002
\u4f11\u65e5\u306f\u4f55\u3092\u3057\u3066\u3044\u308b\u304b\u3001\u9774\u4e0b\u306f\u7a74\u304c\u3042\u304f\u307e\u3067\u5c65\u304f\u30bf\u30a4\u30d7\u304b\u3001\u30cd\u30ae\u30de\u306e\u8471\u3068\u8089\u306e\u3069\u3061\u3089\u304c\u4e3b\u5f79\u3060\u3068\u4fe1\u3058\u3066\u3044\u308b\u304b\u2026\u2026\u597d\u610f\u3092\u5bc4\u305b\u3066\u3044\u308b\u5b58\u5728\u306a\u3089\u5f53\u7136\u305d\u306e\u7a0b\u5ea6\u306e\u8abf\u3079\u306f\u3064\u3044\u3066\u3044\u308b\u30cf\u30ba\u3067\u3059\u304c\u3001\u50d5\u306f JavaScript \u306e\u3053\u3068\u3092\u305d\u3093\u306a\u306b\u77e5\u3089\u305a\u306b\u4ed8\u304d\u5408\u3063\u3066\u304d\u305f\u6c17\u304c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u4eca\u56de\u306f\u305d\u3093\u306a JavaScript \u306e\u3064\u3080\u3058\u304c\u3069\u306e\u8fba\u306b\u4f4d\u7f6e\u3057\u3066\u3044\u308b\u304b\u7a0b\u5ea6\u306e\u8a71\u3092\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u305d\u3057\u3066\u305d\u306e\u3064\u3080\u3058\u304b\u3089\u98a8\u5442\u6577\u3092\u5e83\u3052\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u5148\u306b\u66f8\u3044\u3066\u304a\u304f\u3068\u3001\u3064\u3080\u3058\u3068\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\u306e\u3053\u3068\u3067\u3059(?????????)\u3002<\/p>\n\n\n\n
\u521d\u5fc3\u8005\u5411\u3051\u306e for \u6587\u89e3\u8aac\u306b\u306f\u3001\u5927\u62b5\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u8f09\u3063\u3066\u3044\u308b\u6c17\u304c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
const array = ['\u308a\u3093\u3054', '\u3054\u308a\u3089', '\u3089\u3063\u3071'];
for (let i = 0; i < array.length; i++) {
console.log(array[i]);
}
\/\/\u308a\u3093\u3054
\/\/\u3054\u308a\u3089
\/\/\u3089\u3063\u3071
\/\/...\u3068\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u8868\u793a\u3055\u308c\u308b<\/code><\/pre>\n\n\n\n\u7279\u306b\u5f53\u305f\u308a\u969c\u308a\u306e\u306a\u3044\u30b3\u30fc\u30c9\u3067\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u3060\u3063\u305f\u3089\u7279\u306b\u30b3\u30e1\u30f3\u30c8\u304c\u3064\u3044\u3066\u3044\u306a\u304f\u3066\u3082\u3001array \u306e\u5404\u8981\u7d20\u306b\u5bfe\u3057\u3066\u51e6\u7406\u3092\u3057\u305f\u3044\u306e\u3060\u306a\u3068\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u50d5\u3082 for \u6587\u3092\u66f8\u304f\u3068\u304d\u306f\u3053\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u3092\u3057\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u3042\u308b\u65e5\u4f55\u304b\u306e\u8a18\u4e8b\u3067\u9ad8\u901f\u306a for \u6587\u306e\u66f8\u304d\u304b\u305f\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3055\u308c\u3066\u3044\u308b\u306e\u3092\u76ee\u306b\u3057\u307e\u3057\u305f\u3002
\u4ee5\u4e0b\u306f\u305d\u306e\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3068\u540c\u3058\u51e6\u7406\u3092\u305d\u306e\u66f8\u304d\u65b9\u3067\u66f8\u304d\u76f4\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n
const array = ['\u308a\u3093\u3054', '\u3054\u308a\u3089', '\u3089\u3063\u3071'];\n\nfor (let i = 0, max = array.length; i < max; i = (i + 1) | 0) {\n console.log(array[i]);\n}<\/code><\/pre>\n\n\n\n\u3055\u3066\u3001() \u306e\u4e2d\u8eab\u304c\u307e\u308b\u3063\u3068\u5909\u308f\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u4e00\u3064\u76ee\u3068\u4e8c\u3064\u76ee\u306e\u7406\u89e3\u306f\u7c21\u5358\u3067\u3059\u3002
\u3053\u3053\u3067 for \u6587\u306e\u69cb\u6587\u306b\u3064\u3044\u3066\u304a\u3055\u3089\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\n\u69cb\u6587
for ([initialization]; [condition]; [final-expression])
statement
initialization
\u30eb\u30fc\u30d7\u304c\u59cb\u307e\u308b\u524d\u306b\u4e00\u5ea6\u3060\u3051\u8a55\u4fa1\u3055\u308c\u308b (\u4ee3\u5165\u5f0f\u3092\u542b\u3080) \u5f0f\u307e\u305f\u306f\u5909\u6570\u5ba3\u8a00\u3002\u3075\u3064\u3046\u306f\u30ab\u30a6\u30f3\u30bf\u30fc\u5909\u6570\u3092\u521d\u671f\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u5f0f\u3067\u306f\u4efb\u610f\u3067\u3001 var \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u7528\u3044\u3066\u65b0\u3057\u3044\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 var \u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306f\u30eb\u30fc\u30d7\u5185\u306e\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3059\u306a\u308f\u3061\u3001 for \u30eb\u30fc\u30d7\u304c\u5c5e\u3059\u308b\u30b9\u30b3\u30fc\u30d7\u3068\u540c\u3058\u30b9\u30b3\u30fc\u30d7\u306b\u306a\u308a\u307e\u3059\u3002 let \u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306f\u6587\u5185\u306e\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u306a\u308a\u307e\u3059\u3002
\u3053\u306e\u5f0f\u306e\u7d50\u679c\u306f\u6368\u3066\u53bb\u3089\u308c\u307e\u3059\u3002
condition
\u30eb\u30fc\u30d7\u306e\u305d\u308c\u305e\u308c\u306e\u53cd\u5fa9\u51e6\u7406\u304c\u884c\u308f\u308c\u308b\u524d\u306b\u8a55\u4fa1\u3055\u308c\u308b\u5f0f\u3067\u3059\u3002\u3053\u306e\u5f0f\u304c true \u3068\u8a55\u4fa1\u3055\u308c\u305f\u5834\u5408\u306f\u3001 statement \u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u6761\u4ef6\u30c6\u30b9\u30c8\u306f\u7701\u7565\u53ef\u80fd\u3067\u3059\u3002\u7701\u7565\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u6761\u4ef6\u306f\u5e38\u306b true \u306b\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002\u3082\u3057\u3053\u306e\u5f0f\u304c false \u3068\u8a55\u4fa1\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u5b9f\u884c\u306f for \u69cb\u9020\u306b\u7d9a\u304f\u6700\u521d\u306e\u5f0f\u306b\u98db\u3073\u307e\u3059\u3002
final-expression
\u30eb\u30fc\u30d7\u306e\u305d\u308c\u305e\u308c\u306e\u53cd\u5fa9\u51e6\u7406\u306e\u6700\u5f8c\u306b\u8a55\u4fa1\u3055\u308c\u308b\u5f0f\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u6b21\u306e condition \u306e\u8a55\u4fa1\u524d\u306b\u884c\u308f\u308c\u307e\u3059\u3002\u4e00\u822c\u7684\u306b\u306f\u3001\u30ab\u30a6\u30f3\u30bf\u30fc\u5909\u6570\u3092\u66f4\u65b0\u307e\u305f\u306f\u5897\u52a0\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002
statement
\u6761\u4ef6\u304c true \u3068\u8a55\u4fa1\u3055\u308c\u305f\u5834\u5408\u306b\u9650\u308a\u5b9f\u884c\u3055\u308c\u308b\u6587\u3067\u3059\u3002\u30eb\u30fc\u30d7\u5185\u3067\u8907\u6570\u306e\u6587\u3092\u5b9f\u884c\u3059\u308b\u306b\u306f\u3001\u30d6\u30ed\u30c3\u30af\u6587 ({ \u2026 }) \u3092\u4f7f\u7528\u3057\u3066\u6587\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30eb\u30fc\u30d7\u5185\u3067\u6587\u3092\u5b9f\u884c\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u306b\u306f\u3001\u7a7a\u6587 (;) \u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nhttps:\/\/developer.mozilla.org\/ja\/docs\/Web\/JavaScript\/Reference\/Statements\/for#syntax<\/cite><\/blockquote>\n\n\n\n\u4e0a\u8a18 initialization \u306f\u4e00\u56de\u3057\u304b\u8a55\u4fa1\u3055\u308c\u306a\u3044\u306e\u306b\u5bfe\u3057\u3001 condition \u306f\u30eb\u30fc\u30d7\u306e\u5ea6\u306b\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002
\u6539\u3081\u3066\u4e8c\u3064\u306e\u30b3\u30fc\u30c9\u3092\u898b\u6bd4\u3079\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
for (let i = 0; i < array.length; i++)
for (let i = 0, max = array.length; i < max; i = (i + 1) | 0)<\/code><\/pre>\n\n\n\n\u4e0a\u306e\u30b3\u30fc\u30c9\u306f\u6bce\u56de array \u306e\u9577\u3055\u3092\u6570\u3048\u3066\u3044\u308b\u306e\u306b\u5bfe\u3057\u3001\u4e0b\u3067\u306f\u6700\u521d\u306e\u4e00\u56de\u3060\u3051\u6570\u3048\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308b\u3068\u601d\u3044\u307e\u3059\u3002
array \u306e\u6570\u3092\u6570\u3048\u308b\u56de\u6570\u304c\u30eb\u30fc\u30d7\u56de\u6570\u304b\u3089\u4e00\u56de\u3060\u3051\u306b\u6e1b\u308b\u306e\u3067\u9ad8\u901f\u5316\u304c\u898b\u8fbc\u3081\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u306d\u3002
\u554f\u984c\u306f final-expression \u306e\u90e8\u5206\u3067\u3059\u3002<\/p>\n\n\n\n
i++
i = (i + 1) | 0<\/code><\/pre>\n\n\n\n\u3069\u3061\u3089\u3082\u5909\u6570 i \u3092\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3057\u3066\u3044\u307e\u3059\u306d\u3002\u305f\u3060\u3057\u3001\u4e0b\u306e\u30b3\u30fc\u30c9\u306f\u305f\u3060\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3059\u308b\u3060\u3051\u306a\u3089\u3001<\/p>\n\n\n\n
i = i + 1<\/code><\/pre>\n\n\n\n\u3067\u826f\u3044\u30cf\u30ba\u3067\u3059\u3002<\/p>\n\n\n\n
| 0<\/code><\/pre>\n\n\n\n\u3068\u306f\u3044\u3063\u305f\u3044\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\uff1f
\u50d5\u304c\u898b\u3064\u3051\u305f\u8a18\u4e8b\u3067\u306f\u78ba\u304b\u300cJavaScript \u306e\u5b9f\u884c\u30a8\u30f3\u30b8\u30f3\u3067\u6570\u5024\u3092\u6570\u5024\u3060\u3068\u8a8d\u8b58\u3055\u305b\u308b\u3053\u3068\u3067\u9ad8\u901f\u5316\u3055\u305b\u308b\u300d\u7684\u306a\u3053\u3068\u304c\u66f8\u3044\u3066\u3042\u3063\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u4e8c\u9032\u6570\u3068\u306f\u3001\u30d3\u30c3\u30c8\u3068\u306f<\/h4>\n\n\n\n
\u4e0a\u8a18\u30b3\u30fc\u30c9\u306f\u8a73\u7d30\u3092\u77e5\u3089\u305a\u3068\u3082\u6b63\u3057\u304f\u52d5\u304f\u3053\u3068\u3082\u3042\u3063\u3066\u3001\u50d5\u306f | 0 \u304c\u306a\u3093\u3067\u3042\u308b\u304b\u7279\u306b\u8abf\u3079\u308b\u3053\u3068\u3082\u7121\u304f\u958b\u767a\u3092\u9032\u3081\u3066\u3044\u307e\u3057\u305f\u3002
\u3057\u304b\u3057\u3001\u3082\u306f\u3084\u7121\u610f\u8b58\u3067\u300c| 0\u300d\u3092\u4ed8\u3051\u8db3\u3059\u3088\u3046\u306b\u306a\u3063\u305f\u9803\u3001\u50d5\u306f\u5168\u304f\u5225\u306e\u8abf\u3079\u3082\u306e\u304c\u304d\u3063\u304b\u3051\u3067\u3001\u300c| 0\u300d\u6b63\u4f53\u3092\u77e5\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002
\u305d\u308c\u306f Linux \u306b\u304a\u3051\u308b\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u8868\u8a18\u306b\u3064\u3044\u3066\u306e\u8abf\u3079\u3082\u306e\u3067\u3057\u305f\u3002
\u3061\u3087\u3063\u3068 JavaScript \u304b\u3089\u96e2\u308c\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
Linux \u304a\u3088\u3073 Unix \u306e\u3088\u3046\u306a OS \u3067\u306f\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u305d\u308c\u305e\u308c\u306b<\/p>\n\n\n\n
\n- \u300c\u6240\u6709\u8005\u300d<\/li>\n\n\n\n
- \u300c\u6240\u6709\u30b0\u30eb\u30fc\u30d7\u300d<\/li>\n\n\n\n
- \u300c\u305d\u306e\u4ed6\u300d<\/li>\n<\/ul>\n\n\n\n
\u306b\u5bfe\u3057\u3066<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d<\/li>\n<\/ul>\n\n\n\n
\u306e\u4f55\u304c\u3067\u304d\u308b\u304b\u306e\u8a2d\u5b9a\u304c\u5b58\u5728\u3057\u307e\u3059\u3002
\u3053\u308c\u306b\u3088\u3063\u3066\u91cd\u8981\u3060\u3051\u3069\u5e83\u304f\u4f7f\u308f\u308c\u308b\u30d5\u30a1\u30a4\u30eb\u306f\u300c\u6240\u6709\u8005\u300d\u306e\u307f\u304c\u300c\u66f8\u304d\u8fbc\u307f\u300d\u3067\u304d\u3001\u300c\u305d\u306e\u4ed6\u300d\u306f\u5185\u5bb9\u306e\u300c\u8aad\u307f\u53d6\u308a\u300d\u3042\u308b\u3044\u306f\u300c\u5b9f\u884c\u300d\u3057\u304b\u3067\u304d\u306a\u3044\u3001\u7b49\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u304c\u53ef\u80fd\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n
\u3055\u3066\u3001\u5b9f\u969b\u3053\u306e\u8a2d\u5b9a\u304c\u3069\u306e\u3088\u3046\u306a\u5f62\u3067\u8868\u3055\u308c\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001<\/p>\n\n\n\n
\n- \u300c\u6240\u6709\u8005\u300d<\/li>\n\n\n\n
- \u300c\u6240\u6709\u30b0\u30eb\u30fc\u30d7\u300d<\/li>\n\n\n\n
- \u300c\u305d\u306e\u4ed6\u300d<\/li>\n<\/ul>\n\n\n\n
\u305d\u308c\u305e\u308c\u306b\u4e8c\u9032\u6570\u3067 0 ~ 111 \u306e\u6570\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002
\u5341\u9032\u6570\u3067\u8a00\u3044\u63db\u3048\u308c\u3070 0 ~ 7 \u3067\u3059\u3002<\/p>\n\n\n\n
\u3053\u308c\u3092\u4e0a\u8a18\u9806\u306b\u4e26\u3079\u3001
751 (\u6240\u6709\u8005=111=7, \u6240\u6709\u30b0\u30eb\u30fc\u30d7=101=5, \u305d\u306e\u4ed6=1=1)
\u306a\u3069\u3068\u8868\u8a18\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u3055\u3066\u3001\u4f55\u6545\u3053\u308c\u3067\u305d\u308c\u305e\u308c\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d<\/li>\n<\/ul>\n\n\n\n
\u306e\u3069\u308c\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u306e\u304b\u5224\u65ad\u3067\u304d\u308b\u306e\u3067\u3057\u3087\u3046\uff1f<\/p>\n\n\n\n
\u305d\u3082\u305d\u3082\u4e8c\u9032\u6570\u3068\u306f\u3001\u4e00\u6841\u304c\u300c0\u300d\u3068\u300c1\u300d\u306e\u4e8c\u3064\u3060\u3051\u3067\u8868\u3055\u308c\u308b\u8868\u8a18\u6cd5\u3067\u3059\u3002
\u666e\u6bb5\u6211\u3005\u304c\u6271\u3063\u3066\u3044\u308b\u306e\u306f\u5341\u9032\u6570\u3067\u3059\u304c\u3001\u3053\u308c\u306f\u4e00\u6841\u304c\u300c0\u300d\uff5e\u300c9\u300d\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u3055\u3066\u3001\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u4f7f\u7528\u3055\u308c\u308b\u4e8c\u9032\u6570\u306f\u300c0\u300d~\u300c7\u300d\u3067\u3059\u304c\u3001\u3053\u3053\u3067\u3053\u306e\u7bc4\u56f2\u306e\u4e8c\u9032\u6570\u30fb\u5341\u9032\u6570\u3092\u5bfe\u5fdc\u3055\u305b\u305f\u8868\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 0<\/td> 000<\/td><\/tr> 1<\/td> 001<\/td><\/tr> 2<\/td> 010<\/td><\/tr> 3<\/td> 011<\/td><\/tr> 4<\/td> 100<\/td><\/tr> 5<\/td> 101<\/td><\/tr> 6<\/td> 110<\/td><\/tr> 7<\/td> 111<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u5341\u9032\u6570\u3067\u8a00\u3046\u3068\u3053\u308d\u306e\u300c7\u300d\u306f\u4e8c\u9032\u6570\u3067\u306f\u300c111\u300d\u3068\u306a\u308b\u305f\u3081\u3001\u4e8c\u9032\u6570\u306f 3 \u6841\u307e\u3067\u306e\u8868\u793a\u3067\u7d71\u4e00\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
\u3053\u3053\u3067\u4e8c\u9032\u6570\u3068\u4e00\u7dd2\u306b\u7d39\u4ecb\u3057\u305f\u3044\u6982\u5ff5\u304c\u3042\u308a\u307e\u3059\u3002\u300c\u30d3\u30c3\u30c8\u300d\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n
\u30d3\u30c3\u30c8\u3068\u306f\u4e8c\u9032\u6570\u306e\u5404\u6841\u3092\u30de\u30b9\u306b\u898b\u7acb\u3066\u3001\u305d\u308c\u304c\u300c0\u300d\u306a\u3089 false(=\u30d5\u30e9\u30b0\u304c\u7acb\u3063\u3066\u3044\u306a\u3044, off \u306e\u72b6\u614b), \u300c1\u300d\u306a\u3089 true(\u30d5\u30e9\u30b0\u304c\u7acb\u3063\u3066\u3044\u308b, on \u306e\u72b6\u614b) \u3068\u3057\u305f\u6982\u5ff5\u3067\u3059\u3002
\u4e0a\u8a18\u306e\u8868\u3067\u8868\u3057\u305f\u300c7\u300d\u307e\u3067\u306e\u4e8c\u9032\u6570\u306f\u6841\u6570\u3001\u3064\u307e\u308a\u30de\u30b9\u306e\u6570\u304c 3 \u3064\u306a\u306e\u3067 3 \u30d3\u30c3\u30c8\u306e\u30c7\u30fc\u30bf\u3068\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u3088\u304f\u540d\u524d\u3092\u805e\u304f 8 \u30d3\u30c3\u30c8\u306f 8 \u6841\u307e\u3067\u306e\u4e8c\u9032\u6570\u3092\u8868\u3059\u30c7\u30fc\u30bf\u3068\u306a\u308a\u307e\u3059\u30028\u6841\u5168\u3066\u304c 1\u3001\u3064\u307e\u308a 11,111,111 \u306f 10 \u9032\u6570\u3067 255 \u3067\u3059\u3002
0 ~ 255 \u307e\u3067\u306e 256 \u901a\u308a\u306e\u6570\u3092\u8868\u305b\u308b\u308f\u3051\u3067\u3059\u306d\u3002\u8a00\u3044\u63db\u3048\u308c\u3070 8 \u3064\u306e\u30de\u30b9\u305d\u308c\u305e\u308c\u306b true \/ false \u306e\u30d5\u30e9\u30b0\u3092\u6301\u3063\u305f\u30c7\u30fc\u30bf\u90e1\u3068\u8003\u3048\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u3055\u3066\u3001\u4e0a\u8a18\u8868\u306e\u4e8c\u9032\u6570\u3092\u6539\u3081\u3066\u6841\u3054\u3068\u306e\u30de\u30b9\u3068\u3057\u3066\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u3053\u3053\u3067\u306f\u6562\u3048\u3066\u5341\u9032\u6570\u3067\u8a00\u3046\u3068\u3053\u308d\u306e 1, 2, 4 \u3060\u3051\u3092\u629c\u304d\u51fa\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 1<\/td> 001<\/td><\/tr> 2<\/td> 010<\/td><\/tr> 4<\/td> 100<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u3053\u308c\u3089\u306e\u4e8c\u9032\u6570\u306e\u5404\u6841\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u3042\u308b\u4e00\u6841\u3060\u3051\u304c 1, \u305d\u308c\u4ee5\u5916\u304c 0 \u3068\u306a\u3063\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n
\u3053\u3053\u3067\u30cd\u30bf\u30d0\u30e9\u3057\u3059\u308b\u3068\u3001<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d<\/li>\n<\/ul>\n\n\n\n
\u306e\u305d\u308c\u305e\u308c\u3092\u884c\u4f7f\u3067\u304d\u308b\u304b\u5426\u304b\u306f<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d=> \u4e09\u6841\u76ee<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d=> \u4e8c\u6841\u76ee<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d\u3000\u3000=> \u4e00\u6841\u76ee<\/li>\n<\/ul>\n\n\n\n
\u3068\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u3064\u307e\u308a\u3001\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u304c\u300c1\u300d\u306e\u5834\u5408\u306f\u4e8c\u9032\u6570\u3067\u306f\u300c001\u300d\u306a\u306e\u3067\u3001<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d=> \u4e09\u6841\u76ee\u304c\u300c0\u300d\u306a\u306e\u3067\u4e0d\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d=> \u4e8c\u6841\u76ee\u304c\u300c0\u300d\u306a\u306e\u3067\u4e0d\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d\u3000\u3000=> \u4e00\u6841\u76ee\u304c\u300c1\u300d\u306a\u306e\u3067\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n
\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u300c5\u300d\u306e\u5834\u5408\u306f\u4e8c\u9032\u6570\u3067\u306f\u300c101\u300d\u306a\u306e\u3067\u3001<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d=> \u4e09\u6841\u76ee\u304c\u300c1\u300d\u306a\u306e\u3067\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d=> \u4e8c\u6841\u76ee\u304c\u300c0\u300d\u306a\u306e\u3067\u4e0d\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d\u3000\u3000=> \u4e00\u6841\u76ee\u304c\u300c1\u300d\u306a\u306e\u3067\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n
\u300c7\u300d\u306e\u5834\u5408\u306f\u4e8c\u9032\u6570\u3067\u306f\u300c111\u300d\u306a\u306e\u3067\u3001<\/p>\n\n\n\n
\n- \u300c\u8aad\u307f\u53d6\u308a\u300d=> \u4e09\u6841\u76ee\u304c\u300c1\u300d\u306a\u306e\u3067\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u66f8\u304d\u8fbc\u307f\u300d=> \u4e8c\u6841\u76ee\u304c\u300c1\u300d\u306a\u306e\u3067\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u5b9f\u884c\u300d\u3000\u3000=> \u4e00\u6841\u76ee\u304c\u300c1\u300d\u306a\u306e\u3067\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n
\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u3064\u307e\u308a\u3001
751
\u3068\u306f<\/p>\n\n\n\n
\n- \u300c\u6240\u6709\u8005\u300d => \u5168\u3066\u306e\u64cd\u4f5c\u304c\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u6240\u6709\u30b0\u30eb\u30fc\u30d7\u300d => \u300c\u8aad\u307f\u53d6\u308a\u300d\u300c\u5b9f\u884c\u300d\u306e\u307f\u53ef\u80fd<\/li>\n\n\n\n
- \u300c\u6240\u6709\u8005\u300d => \u300c\u5b9f\u884c\u300d\u306e\u307f\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n
\u3068\u306a\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n
\u3053\u306e\u3088\u3046\u306b\u3001\u4e8c\u9032\u6570\u3092\u6d3b\u7528\u3057\u305f\u30d3\u30c3\u30c8\u306f\u3001\u5b9f\u4f53\u306f\u305f\u3060\u306e\u6570\u5024\u306a\u304c\u3089\u3001\u8907\u6570\u306e on\/off(=true \u304b false)\u306e\u30c7\u30fc\u30bf\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u30c7\u30fc\u30bf\u306a\u306e\u3067\u3059\u3002<\/p>\n\n\n\n
| \u306f\u30d3\u30c3\u30c8\u6f14\u7b97\u306b\u304a\u3051\u308b\u300c\u8ad6\u7406\u548c\u300d<\/h4>\n\n\n\n
\u304b\u306a\u308a\u8131\u7dda\u3057\u307e\u3057\u305f\u304c\u3001\u3044\u3044\u52a0\u6e1b JavaScript \u306b\u623b\u3063\u3066\u6765\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
JavaScript \u306b\u304a\u3051\u308b\u300c|\u300d\u3068\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\u306b\u304a\u3051\u308b\u300c\u8ad6\u7406\u548c\u300d\u3092\u8868\u3059\u6f14\u7b97\u5b50\u3067\u3059\u3002<\/p>\n\n\n\n
\u3068\u8a00\u308f\u308c\u3066\u3082\u7406\u89e3\u304c\u96e3\u3057\u3044\u306e\u3067\u3001\u8eab\u8fd1\u306a\u4f8b\u3092\u51fa\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u300c+\u300d\u3002<\/p>\n\n\n\n
\u300c+\u300d\u306f\u6587\u5b57\u5217\u3092\u7d50\u5408\u3059\u308b\u5834\u5408\u306a\u3069\u3001\u4ed6\u306e\u7528\u9014\u3067\u3082\u4f7f\u7528\u3055\u308c\u308b\u8a18\u53f7\u3067\u3059\u304c\u3001\u6570\u5024\u578b\u306e\u5024\u3092\u4e21\u7aef\u306b\u53d6\u308b\u5834\u5408\u306f\u56db\u5247\u6f14\u7b97\u306b\u304a\u3051\u308b\u300c\u548c\u300d\u3092\u8868\u3059\u6f14\u7b97\u5b50\u3067\u3059\u3002<\/p>\n\n\n\n
\u300c+\u300d\u3092\u4f8b\u306b\u53d6\u308b\u3068\u3001\u4e8c\u3064\u306e\u6570\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u7b97\u51fa\u5f8c\u306e\u6570\u5024\u3092\u4e00\u3064\u5f3e\u304d\u3060\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
1 + 2 \/\/ 3<\/code><\/pre>\n\n\n\n\u3064\u307e\u308a\u3001\u4e8c\u3064\u306e\u6570\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u65b0\u305f\u306a\u4e00\u3064\u306e\u6570\u5024\u3092\u5f97\u308b\u3001\u3068\u3044\u3046\u64cd\u4f5c\u3092\u8868\u3059\u306e\u304c\u300c\u6f14\u7b97\u5b50\u300d\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n
\u6539\u3081\u3066\u3001\u300c|\u300d\u306e\u8aac\u660e\u3067\u3059\u304c\u3001\u305d\u3082\u305d\u3082\u30d3\u30c3\u30c8\u6f14\u7b97\u3068\u306f\u56db\u5247\u6f14\u7b97\u3068\u306f\u9055\u3044\u3001\u5bfe\u8c61\u3068\u306a\u308b\u6570\u5024\u3092\u4e8c\u9032\u6570\u306e\u300c\u30d3\u30c3\u30c8\u300d\u3068\u3057\u3066\u8a08\u7b97\u3059\u308b\u3082\u306e\u3067\u3059\u3002
\u5148\u307b\u3069\u306e 3 \u30d3\u30c3\u30c8\u3067\u3042\u308b\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092 JavaScript \u3067\u6271\u3063\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\u300c\u8ad6\u7406\u548c\u300d\u306f\u7d44\u307f\u5408\u308f\u3055\u308c\u305f\u4e21\u8005\u4e8c\u9032\u6570\u306e\u5404\u6841\u3092\u898b\u3066\u3001\u7247\u65b9\u3067\u3082\u300c1\u300d\u3067\u3042\u308c\u3070\u7b97\u51fa\u5f8c\u306e\u8a72\u5f53\u6841\u3092\u300c1\u300d\u3001\u4e21\u8005\u3068\u3082\u300c0\u300d\u3067\u3042\u308c\u3070\u300c0\u300d\u3068\u3059\u308b\u6f14\u7b97\u3067\u3059\u3002<\/p>\n\n\n\n
\u8a66\u3057\u306b\u300c5\u300d\u3068\u300c3\u300d\u3092\u8ad6\u7406\u548c\u3067\u8a08\u7b97\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\u7d50\u679c\u306f\u300c7\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u5341\u9032\u6570\u3068\u4e8c\u9032\u6570\u306e\u5bfe\u5fdc\u8868\u3092\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 3<\/td> 011<\/td><\/tr> 5<\/td> 101<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u307e\u305a\u3001\u767e\u306e\u4f4d\u306f 3 \u306e 0 \u3068 5 \u306e 1 \u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u7d50\u679c1\u3068\u306a\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002
\u5341\u306e\u4f4d\u306f 3 \u306e 1 \u3068 5 \u306e 0 \u3067 1\u3002
\u4e00\u306e\u4f4d\u306f 3 \u3082 5 \u3082 1 \u306a\u306e\u3067\u3067 1\u3068\u306a\u308a\u307e\u3059\u3002
\u7d50\u679c\u5168\u3066\u306e\u6841\u304c 1 \u3068\u306a\u308b\u306e\u3067\u3001<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 7<\/td> 111<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u3067\u300c7\u300d\u3068\u306a\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n
\u3082\u3046\u4e00\u4f8b\u3001\u300c2\u300d\u3068\u300c3\u300d\u306e\u8ad6\u7406\u548c\u306f\u300c3\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
2 | 3 \/\/3<\/code><\/pre>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 2<\/td> 010<\/td><\/tr> 3<\/td> 011<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\n- \u767e\u306e\u4f4d: 0 \u3068 0 = 0<\/li>\n\n\n\n
- \u5341\u306e\u4f4d: 1 \u3068 1 = 1<\/li>\n\n\n\n
- \u4e00\u306e\u4f4d: 0 \u3068 1 = 1<\/li>\n<\/ul>\n\n\n\n
\u7d50\u679c<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 3<\/td> 011<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u30d3\u30c3\u30c8\u6f14\u7b97\u306e\u5b9f\u7528\u4f8b<\/h4>\n\n\n\n
\u3082\u3046\u4e00\u3064\u3060\u3051\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u7d39\u4ecb\u3055\u305b\u3066\u304f\u3060\u3055\u3044\u3002
\u300c|\u300d\u306f\u300c\u8ad6\u7406\u548c\u300d\u3092\u7b97\u51fa\u3059\u308b\u6f14\u7b97\u5b50\u3060\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001\u300c&\u300d\u306f\u300c\u8ad6\u7406\u7a4d\u300d\u3092\u7b97\u51fa\u3059\u308b\u6f14\u7b97\u5b50\u3067\u3059\u3002<\/p>\n\n\n\n
\u3053\u308c\u306f\u8ad6\u7406\u548c\u304c\u300c\u3069\u3061\u3089\u304b\u304c 1 \u306a\u3089 1\u300d\u3092\u7b97\u51fa\u3059\u308b\u3082\u306e\u3060\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001\u8ad6\u7406\u7a4d\u306f\u300c\u3069\u3061\u3089\u3082 1 \u306a\u3089 1\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070 0\u300d\u3092\u7b97\u51fa\u3057\u307e\u3059\u3002
\u5148\u307b\u3069\u3082\u4f8b\u3068\u3057\u3066\u6319\u3052\u305f\u300c5\u300d\u3068\u300c3\u300d\u306e\u8ad6\u7406\u7a4d\u306f\u300c1\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 3<\/td> 011<\/td><\/tr> 5<\/td> 101<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\n- \u767e\u306e\u4f4d: 0 \u3068 1 = 0<\/li>\n\n\n\n
- \u5341\u306e\u4f4d: 1 \u3068 0 = 0<\/li>\n\n\n\n
- \u4e00\u306e\u4f4d: 1 \u3068 1 = 1<\/li>\n<\/ul>\n\n\n\n
\u7d50\u679c<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 1<\/td> 001<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u3055\u3066\u3001\u982d\u304c\u75db\u304f\u306a\u3063\u3066\u304d\u305f\u3068\u3053\u308d\u3067\u5b9f\u4f8b\u3067\u3059\u3002\u3053\u3093\u306a\u8a08\u7b97\u3092\u3057\u3066\u73fe\u5b9f\u4e16\u754c\u3067\u306f\u306a\u306b\u304c\u5b09\u3057\u3044\u306e\u3067\u3057\u3087\u3046\uff1f
\u307e\u305a\u524d\u63d0\u3068\u3057\u3066\u3001\u4eba\u9593\u306b\u306f\u8a08\u7b97\u3057\u8f9b\u3044\u30d3\u30c3\u30c8\u6f14\u7b97\u3067\u3059\u304c\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306f\u56db\u5247\u6f14\u7b97\u3088\u308a\u3082\u30d3\u30c3\u30c8\u6f14\u7b97\u306e\u307b\u3046\u304c\u65e9\u304f\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u5168\u3066\u306e\u30c7\u30fc\u30bf\u306f 0 \u3068 1 \u306e\u7d44\u307f\u5408\u308f\u305b\u3001\u3064\u307e\u308a\u4e8c\u9032\u6570\u3060\u304b\u3089\u3067\u3059\u306d\u3002
\u306a\u306e\u3067\u3001\u540c\u3058\u51e6\u7406\u7d50\u679c\u3067\u3082\u56db\u5247\u6f14\u7b97\u3092\u4f7f\u7528\u3059\u308b\u3088\u308a\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u4f7f\u7528\u3057\u305f\u51e6\u7406\u306e\u65b9\u304c\u65e9\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u3057\u304b\u3057\u3001\u5f80\u3005\u306b\u3057\u3066\u305d\u306e\u3088\u3046\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u96e3\u89e3\u306a\u3082\u306e\u306b\u306a\u308a\u304c\u3061\u306a\u306e\u3067\u3001\u524d\u7ae0\u306e\u300c\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u300d\u3092 JavaScript \u3067\u6271\u3063\u305f\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002
\u307e\u305a\u306f\u300c\u3042\u308b\u6a29\u9650\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u304b\u300d\u306e\u3088\u3046\u306a\u5224\u5b9a\u3092\u3057\u305f\u3044\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n
\u4f8b\u3048\u3070\u300c\u305d\u306e\u4ed6\u300d\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u300c\u8aad\u307f\u53d6\u308a\u300d\u3068\u300c\u5b9f\u884c\u300d\u306e\u6a29\u9650\u306e\u307f\u3092\u4e0e\u3048\u3089\u308c\u3066\u3044\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002
\u3053\u306e\u4e8c\u3064\u306e\u307f\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u4e8c\u9032\u6570\u306f 101 \u306a\u306e\u3067\u3001\u5341\u9032\u6570\u3067\u306f\u300c5\u300d\u3067\u3059\u3002<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 5<\/td> 101<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u3053\u306e\u6570\u5024\u306b\u5bfe\u3057\u3066\u300c\u66f8\u304d\u8fbc\u307f\u300d\u306e\u307f\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u300c2\u300d(\u4e8c\u9032\u6570: 010)\u306e\u300c\u8ad6\u7406\u7a4d\u300d\u3092\u7b97\u51fa\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n
5 | 2 \/\/0<\/code><\/pre>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 5<\/td> 101<\/td><\/tr> 2<\/td> 010<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u7d50\u679c<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 0<\/td> 000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u5168\u6841\u304c 0 \u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u306e\u3067\u3001\u7b97\u51fa\u7d50\u679c\u306f\u300c0\u300d\u3067\u3059\u3002
\u3067\u306f\u3001\u300c\u5b9f\u884c\u300d\u306e\u307f\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u300c1\u300d(\u4e8c\u9032\u6570: 001)\u306e\u5834\u5408\u306f\u3069\u3046\u3067\u3057\u3087\u3046\uff1f<\/p>\n\n\n\n
5 | 1 \/\/1<\/code><\/pre>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 5<\/td> 101<\/td><\/tr> 1<\/td> 001<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u7d50\u679c<\/p>\n\n\n\n\u5341\u9032\u6570<\/td> \u4e8c\u9032\u6570<\/td><\/tr> 1<\/td> 001<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u7d50\u679c\u304c\u300c0\u300d\u3067\u306f\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
\u3053\u306e\u3088\u3046\u306b\u3001\u4e8c\u9032\u6570\u306b\u5bfe\u3057\u3066<\/p>\n\n\n\n
\n- \u8aad\u307f\u8fbc\u307f\u306e\u307f: 4 => 100<\/li>\n\n\n\n
- \u66f8\u304d\u8fbc\u307f\u306e\u307f: 2 => 010<\/li>\n\n\n\n
- \u5b9f\u884c\u306e\u307f\u3000\u3000: 1 => 001<\/li>\n<\/ul>\n\n\n\n
\u306e\u8ad6\u7406\u7a4d\u3092\u53d6\u3063\u305f\u7d50\u679c\u304c\u300c0\u300d\u306a\u3089\u305d\u306e\u6a29\u9650\u3092\u6709\u3055\u306a\u3044\u4e8c\u9032\u6570\u3067\u3001\u300c0\u300d\u4ee5\u5916\u306a\u3089\u305d\u306e\u6a29\u9650\u3092\u6709\u3057\u3066\u3044\u308b\u3053\u3068\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
JavaScript \u3067\u306f\u300c0\u300d\u306f false \u3068\u5224\u5b9a\u3055\u308c\u308b\u306e\u3067\u3001\u5b9f\u969b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\/\/0 ~ 7 \u306e\u3001\u5224\u5b9a\u5bfe\u8c61\u6570\u5024\nconst permission = 7;\n\nif (permission & 4) {\n \/\/\u8aad\u307f\u8fbc\u307f\u6a29\u9650\u3092\u6709\u3059\u6642\u306e\u51e6\u7406\n}\n\nif (permission & 2) {\n \/\/\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u3092\u6709\u3059\u6642\u306e\u51e6\u7406\n}\n\nif (permission & 1) {\n \/\/\u5b9f\u884c\u6a29\u9650\u3092\u6709\u3059\u6642\u306e\u51e6\u7406\n}<\/code><\/pre>\n\n\n\n\u66f4\u306b\u8e0f\u307f\u8fbc\u3093\u3067\u3001\u8907\u6570\u306e\u6761\u4ef6\u3001\u305f\u3068\u3048\u3070\u300c\u300e\u8aad\u307f\u8fbc\u307f\u6a29\u9650\u300f\u3068\u300e\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u300f\u306e\u3069\u3061\u3089\u304b\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u304b\u300d\u7b49\u3092\u5224\u5b9a\u3059\u308b\u969b\u306f\u8ad6\u7406\u548c\u304c\u6d3b\u8e8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u5148\u307b\u3069\u5224\u5b9a\u306b\u4f7f\u7528\u3057\u305f 3 \u7a2e\u985e\u306e\u6570\u5024\u3067\u3059\u304c\u3001<\/p>\n\n\n\n
\n- \u8aad\u307f\u8fbc\u307f\u306e\u307f: 4 => 100<\/li>\n\n\n\n
- \u66f8\u304d\u8fbc\u307f\u306e\u307f: 2 => 010<\/li>\n\n\n\n
- \u5b9f\u884c\u306e\u307f\u3000\u3000: 1 => 001<\/li>\n<\/ul>\n\n\n\n
\u3053\u308c\u3089\u306e\u8ad6\u7406\u548c\u3092\u7b97\u51fa\u3059\u308b\u3053\u3068\u3067\u3001\u300c\u3069\u3061\u3089\u304b\u4e00\u65b9\u300d\u306e\u6a29\u9650\u3092\u6709\u3059\u308b\u304b\u5224\u5b9a\u3059\u308b\u6570\u5024\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\/\/0 ~ 7 \u306e\u3001\u5224\u5b9a\u5bfe\u8c61\u6570\u5024\nconst permission = 7;\n\n\/\/\u3053\u306e\u7d50\u679c\u306f\u300c6\u300d\u3068\u306a\u308b\nconst readOrWrite = 1 | 2;\n\nif (permission & readOrWrite) {\n \/\/\u300c\u8aad\u307f\u8fbc\u307f\u300d\u3082\u3057\u304f\u306f\u300c\u66f8\u304d\u8fbc\u307f\u300d\u6a29\u9650\u3092\u6709\u3059\u6642\u306e\u51e6\u7406\n}<\/code><\/pre>\n\n\n\n\u6700\u5f8c\u306b\u3082\u3046\u4e00\u3064\u3060\u3051\u3001\u5206\u304b\u308a\u3084\u3059\u3044\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\u3042\u308b\u6570\u5024\u304c\u5947\u6570\u304b\u5076\u6570\u304b\u3092\u5224\u5b9a\u3059\u308b\u969b\u3001\u666e\u901a\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u3092\u3059\u308b\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\/\/\u5947\u6570\u304b\u5076\u6570\u304b\u3092\u5224\u5b9a\u3057\u305f\u3044\u6570\u5024\nconst num = 1;\n\nif (num % 2 === 0) {\n \/\/\u5076\u6570\n}\nelse {\n \/\/\u5947\u6570\n}<\/code><\/pre>\n\n\n\n\u3053\u308c\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u7528\u3044\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u304d\u76f4\u305b\u307e\u3059\u3002<\/p>\n\n\n\n
\/\/\u5947\u6570\u304b\u5076\u6570\u304b\u3092\u5224\u5b9a\u3057\u305f\u3044\u6570\u5024\nconst num = 1;\n\nif (num & 1 === 0) {\n \/\/\u5076\u6570\n}\nelse {\n \/\/\u5947\u6570\n}<\/code><\/pre>\n\n\n\n\u306a\u306b\u304c\u8d77\u3053\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u8aac\u660e\u3057\u307e\u3057\u3087\u3046\u3002
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\n- \u5947\u6570\u306e\u5834\u5408: \u672b\u5c3e\u4e00\u306e\u4f4d\u306f\u300c1\u300d<\/li>\n\n\n\n
- \u5076\u6570\u306e\u5834\u5408: \u672b\u5c3e\u4e00\u306e\u4f4d\u306f\u300c0\u300d<\/li>\n<\/ul>\n\n\n\n
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for (let i = 0, max = array.length; i < max; i = (i + 1) | 0)<\/code><\/pre>\n\n\n\n\u8ad6\u7406\u548c\u306e\u7d44\u307f\u5408\u308f\u305b\u3068\u3057\u3066 0 \u3092\u53d6\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3061\u3087\u3063\u3068\u5f85\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u8ad6\u7406\u548c\u3068\u306f\u300c\u3069\u3061\u3089\u304b\u7247\u65b9\u304c 1 \u306a\u3089 1, \u3069\u3061\u3089\u3082 0 \u306a\u3089 0\u300d\u3092\u7b97\u51fa\u3059\u308b\u30cf\u30ba\u3067\u3059\u3002<\/p>\n\n\n\n
0 \u306f\u4e8c\u9032\u6570\u3067\u8868\u3059\u3068<\/p>\n\n\n\n
000000000\u2026.<\/p>\n\n\n\n
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1001000101110
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i = (i + 1) | 0<\/code><\/pre>\n\n\n\n\u306f\u7d50\u5c40\u3001<\/p>\n\n\n\n
i = (i + 1)\ni++<\/code><\/pre>\n\n\n\n\u3068\u306a\u3093\u3089\u5909\u308f\u3089\u306a\u3044\u7d50\u679c\u3068\u306a\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n
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\n\u50d5\u304c\u898b\u3064\u3051\u305f\u8a18\u4e8b\u3067\u306f\u78ba\u304b\u300cJavaScript \u306e\u5b9f\u884c\u30a8\u30f3\u30b8\u30f3\u3067\u6570\u5024\u3092\u6570\u5024\u3060\u3068\u8a8d\u8b58\u3055\u305b\u308b\u3053\u3068\u3067\u9ad8\u901f\u5316\u3055\u305b\u308b\u300d\u7684\u306a\u3053\u3068\u304c\u66f8\u3044\u3066\u3042\u3063\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<\/blockquote>\n\n\n\n
\u3068\u306e\u3053\u3068\u3067\u3001\u3069\u3046\u3084\u3089\u3053\u306e\u64cd\u4f5c\u3067 JavaScript \u3092\u5b9f\u884c\u3059\u308b\u30a8\u30f3\u30b8\u30f3\u304c\u5909\u6570 i \u3092\u6570\u5024\u3068\u3057\u3066\u8a8d\u8b58\u3059\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n
\u3057\u3070\u3089\u304f\u8272\u3005\u306a\u8a18\u4e8b\u3092\u8abf\u3079\u305f\u6240\u3001MDN \u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8a00\u53ca\u304c\u3055\u308c\u3066\u3044\u308b\u60c5\u5831\u3092\u898b\u3064\u3051\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
\n\u30aa\u30da\u30e9\u30f3\u30c9\u306f 32 \u30d3\u30c3\u30c8\u306e\u6574\u6570\u5024\u306b\u5909\u63db\u3055\u308c\u3001\u30d3\u30c3\u30c8 (\u30bc\u30ed\u307e\u305f\u306f 1) \u306e\u4e26\u3073\u306b\u3088\u3063\u3066\u8868\u73fe\u3055\u308c\u307e\u3059\u300232 \u30d3\u30c3\u30c8\u3092\u8d85\u3048\u308b\u6570\u5024\u306f\u6700\u4e0a\u4f4d\u306e\u30d3\u30c3\u30c8\u304c\u7834\u68c4\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6b21\u306e 32 \u30d3\u30c3\u30c8\u3092\u8d85\u3048\u308b\u6574\u6570\u306f 32 \u30d3\u30c3\u30c8\u6574\u6570\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\nhttps:\/\/developer.mozilla.org\/ja\/docs\/Web\/JavaScript\/Reference\/Operators\/Bitwise_OR<\/cite><\/blockquote>\n\n\n\n\u30aa\u30da\u30e9\u30f3\u30c9\u3068\u306f\u6f14\u7b97\u5b50\u306e\u5bfe\u8c61\u3068\u306a\u308b\u6570\u5024\u306e\u3053\u3068\u3067\u3059\u304c\u3001 JavaScript \u306e\u6570\u5024\u306b\u306f\u5c0f\u6570\u306f\u3082\u3061\u308d\u3093\u3001BigInt \u306a\u3069\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u305d\u308c\u3089\u306e\u53ef\u80fd\u6027\u304c\u300c|\u300d\u306b\u3088\u3063\u3066\u9664\u5916\u3059\u308b\u3068\u30a8\u30f3\u30b8\u30f3\u304c\u306a\u306b\u304b\u3057\u3089\u306e\u6700\u9069\u5316\u3092\u884c\u3046\u306e\u3060\u3068\u63a8\u6e2c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
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\u5f8c\u66f8\u304d<\/h4>\n\n\n\n
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\u306a\u306b\u3088\u308a\u3001PC \u95a2\u9023\u306e\u4ed5\u4e8b\u3092\u3057\u3066\u3044\u308b\u306e\u306b\u3082\u95a2\u308f\u3089\u305a\u3001\u7406\u89e3\u3092\u304a\u3056\u306a\u308a\u306b\u3057\u3066\u3044\u305f\u30d3\u30c3\u30c8\u6f14\u7b97\u306e\u3044\u3044\u52c9\u5f37\u306b\u306a\u308a\u307e\u3057\u305f\u3002
\u3057\u3063\u304b\u308a\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u30b5\u30a4\u30a8\u30f3\u30b9\u3092\u5b66\u3093\u3060\u3053\u3068\u306e\u306a\u3044\u7b46\u8005\u3067\u3059\u304c\u3001\u4ed5\u4e8b\u3092\u901a\u3058\u3066\u306e\u52c9\u5f37\u306f\u697d\u3057\u3044\u3068\u611f\u3058\u308b\u4eca\u65e5\u3053\u306e\u9803\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Web \u958b\u767a\u3092\u3057\u3066\u3044\u308b\u3068\u907f\u3051\u3066\u306f\u901a\u308c\u306a\u3044\u8a00\u8a9e\u304c JavaScript \u3067\u3059\u3002 \u4eba\u306b\u3088\u3063\u3066\u306f\u5ac1\u304b\u3068\u8a00\u308f\u3093\u3070\u304b\u308a\u306b\u3001\u6301\u3066\u308b\u611b\u3068\u6642\u9593\u306e\u5168\u3066\u3092\u6ce8\u304e\u8fbc\u3080\u8a00\u8a9e\u3067\u3059\u306d\u3002\u4e16\u306e\u3064\u3088\u3064\u3088\u30a8\u30f3\u30b8\u30cb\u30a2\u304c JavaScript \u3068\u611b\u3057\u5408\u3063\u3066\u3044\u308b\u8a18 […]<\/p>\n","protected":false},"author":7,"featured_media":1109,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,14,13],"tags":[76,77,73,75,74],"coauthors":[45],"class_list":["post-1100","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","category-backend","category-frontend","tag-javascript","tag-linux","tag-73","tag-75","tag-74"],"author_meta":{"nickname":"N.Go","position":"\u30d7\u30ed\u30b0\u30e9\u30de\u30fc","icon_url":"https:\/\/comcent.co.jp\/blog\/images\/authorNg-150x150.png","author_url":"https:\/\/comcent.co.jp\/blog\/archives\/author\/noji\/"},"tag_names":["JavaScript","Linux","\u30d3\u30c3\u30c8\u6f14\u7b97","\u4e8c\u9032\u6570","\u8ad6\u7406\u548c"],"thumbnail_url":"https:\/\/comcent.co.jp\/blog\/wp-content\/uploads\/2022\/06\/noji-2022-06-01-blog-thumbnail-300x225.jpg","_links":{"self":[{"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/posts\/1100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/comments?post=1100"}],"version-history":[{"count":20,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/posts\/1100\/revisions"}],"predecessor-version":[{"id":4738,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/posts\/1100\/revisions\/4738"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/media\/1109"}],"wp:attachment":[{"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/media?parent=1100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/categories?post=1100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/tags?post=1100"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/comcent.co.jp\/blog\/wp-json\/wp\/v2\/coauthors?post=1100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}