\u5bfe\u8c61\u914d\u5217.find(\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570)<\/code><\/pre><\/div>\n\n\n\n\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u5185\u3067\u3001\u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u5bfe\u3059\u308b\u51e6\u7406\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306f\u771f\u507d\u5024\u3092\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u3059\u5fc5\u8981\u304c\u3042\u308a\u3001true\u3092\u8fd4\u3057\u305f\u5834\u5408\u306b\u306f\u3001\u8a72\u5f53\u306e\u30eb\u30fc\u30d7\u3067\u51e6\u7406\u5bfe\u8c61\u3068\u306a\u3063\u305f\u8981\u7d20\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u3068\u306a\u308a\u307e\u3059\u3002
\u305d\u306e\u305f\u3081\u3001\u5024\u3092\u6bd4\u8f03\u3059\u308b\u305f\u3081\u306e\u6761\u4ef6\u5f0f\u3092 return \u6587\u3067\u8a18\u8ff0\u3057\u3001\u6bd4\u8f03\u7d50\u679c\u3092\u623b\u308a\u5024\u3068\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst result = sampleArray.find(function(num) {\n return num > 3; \n});<\/code><\/pre><\/div>\n\n\n\n\u30a2\u30ed\u30fc\u95a2\u6570\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3088\u308a\u7c21\u6f54\u306b\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst result = sampleArray.find(num => num > 3);<\/code><\/pre><\/div>\n\n\n\n\u4ee5\u4e0b\u306e\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u5143\u306b\u3001\u5b9f\u969b\u306e\u52d5\u304d\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleArray = [1, 2, 3, 4, 5];\n\nconst result = sampleArray.find(num => num > 2);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n3<\/code><\/pre><\/div>\n\n\n\n\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\u3068\u3057\u3066\u3001\u4e0a\u8a18\u306e\u7d50\u679c\u3092\u898b\u308b\u3068\u5206\u304b\u308b\u3088\u3046\u306b\u3001find\u30e1\u30bd\u30c3\u30c9\u3067\u53d6\u5f97\u3067\u304d\u308b\u306e\u306f\u4e00\u756a\u6700\u521d\u306b\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u8981\u7d20\u306e\u307f\u3068\u306a\u308a\u307e\u3059\u3002
\u6307\u5b9a\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u5168\u3066\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u4f7f\u7528\u306e\u969b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
find\u30e1\u30bd\u30c3\u30c9\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u5f15\u6570\u306e\u610f\u5473<\/h3>\n\n\n\n
find\u30e1\u30bd\u30c3\u30c9\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306b\u306f\u3001\u4ee5\u4e0b\u306e3\u3064\u306e\u5f15\u6570\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\n- \u7b2c1\u5f15\u6570 \u2026 \u51e6\u7406\u4e2d\u306e\u8981\u7d20<\/li>\n\n\n\n
- \u7b2c2\u5f15\u6570 \u2026 \u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/li>\n\n\n\n
- \u7b2c3\u5f15\u6570 \u2026 \u51e6\u7406\u4e2d\u306e\u914d\u5217<\/li>\n<\/ul>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleArray = [1, 2, 3, 4, 5];\n\nconst result = sampleArray.find((num, index, array) => {\n console.log(`\u8981\u7d20\u306e\u5024:${num}, \u30a4\u30f3\u30c7\u30c3\u30af\u30b9:${index}, \u914d\u5217:[${array}]`)\n return num > 2; \n});<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n\u8981\u7d20\u306e\u5024:1, \u30a4\u30f3\u30c7\u30c3\u30af\u30b9:0, \u914d\u5217:[1,2,3,4,5]\n\u8981\u7d20\u306e\u5024:2, \u30a4\u30f3\u30c7\u30c3\u30af\u30b9:1, \u914d\u5217:[1,2,3,4,5]\n\u8981\u7d20\u306e\u5024:3, \u30a4\u30f3\u30c7\u30c3\u30af\u30b9:2, \u914d\u5217:[1,2,3,4,5]<\/code><\/pre><\/div>\n\n\n\n\u3053\u306e\u3088\u3046\u306b\u3001\u51e6\u7406\u5bfe\u8c61\u3068\u3059\u308b\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3084\u64cd\u4f5c\u5143\u306e\u914d\u5217\u3082\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u53d6\u5f97\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n
find\u30e1\u30bd\u30c3\u30c9\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/h2>\n\n\n\n
find\u30e1\u30bd\u30c3\u30c9\u304c\u5b9f\u969b\u306b\u4f7f\u308f\u308c\u308b\u306e\u306f\u3069\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u306a\u306e\u3067\u3057\u3087\u3046\u304b\uff1f
\u3044\u304f\u3064\u304b\u306e\u4f8b\u3092\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u914d\u5217\u304b\u3089\u7279\u5b9a\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u691c\u7d22\u3059\u308b<\/h3>\n\n\n\n
find\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u914d\u5217\u5185\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u691c\u7d22\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002
\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3057\u3066\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u7279\u5b9a\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u57fa\u6e96\u3068\u3057\u3066\u6761\u4ef6\u306e\u6bd4\u8f03\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u4ee5\u4e0b\u306e\u4f8b\u3067\u3001\u5b9f\u969b\u306e\u52d5\u304d\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleObj = [\n {id: 1, name: '\u5c71\u7530\u592a\u90ce'},\n {id: 2, name: '\u4f0a\u85e4\u821e\u5b50'},\n {id: 3, name: '\u7530\u4e2d\u6b21\u90ce'},\n {id: 4, name: '\u9234\u6728\u660e\u7f8e'},\n {id: 5, name: '\u4f50\u85e4\u60a0\u592a'},\n];\n\nconst result = sampleObj.find(item => item.id === 3);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n{ id: 3, name: '\u7530\u4e2d\u6b21\u90ce' }<\/code><\/pre><\/div>\n\n\n\nfind\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u623b\u308a\u5024\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u5fc5\u8981\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u60c5\u5831\u3092\u53d6\u308a\u51fa\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002
JSON\u30c7\u30fc\u30bf\u306a\u3069\u3092\u6271\u3046\u969b\u306b\u3001\u4ee5\u4e0b\u306e\u4f8b\u306e\u3088\u3046\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8981\u7d20\u306b\u6301\u3064\u914d\u5217\u304c\u542b\u307e\u308c\u308b\u30b1\u30fc\u30b9\u3082\u591a\u3005\u3042\u308b\u305f\u3081\u3001\u691c\u7d22\u65b9\u6cd5\u306e1\u3064\u3068\u3057\u3066\u899a\u3048\u3066\u304a\u304f\u3068\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleJson = {\n schoolName: '\u90fd\u7acb\u5357\u9ad8\u7b49\u5b66\u6821',\n student: [\n {id: 1, name: '\u5c71\u7530\u592a\u90ce'},\n {id: 2, name: '\u4f0a\u85e4\u821e\u5b50'},\n {id: 3, name: '\u7530\u4e2d\u6b21\u90ce'},\n {id: 4, name: '\u9234\u6728\u660e\u7f8e'},\n {id: 5, name: '\u4f50\u85e4\u60a0\u592a'}\n ],\n place: '\u6771\u4eac\u90fd\u8db3\u7acb\u533a\u7f8e\u54b21-1-1'\n};\n\nconst studentArray = sampleJson.student\n \nconst result = studentArray.find(item => item.id === 5);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n{ id: 5, name: '\u4f50\u85e4\u60a0\u592a' }<\/code><\/pre><\/div>\n\n\n\n\u5165\u529b\u5024\u304b\u3089\u7279\u5b9a\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b<\/h3>\n\n\n\n
\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u3057\u305f\u60c5\u5831\u3092\u5143\u306b\u3001\u7d10\u4ed8\u3044\u305f\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u305f\u3044\u5834\u5408\u3082\u4e2d\u306b\u306f\u3042\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002
find\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u306b\u3082\u5bfe\u5fdc\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u30fbHTML\u3011<\/strong><\/p>\n\n\n\n<label>\u96fb\u8a71\u756a\u53f7\uff1a<input type="text" id="telText"><\/label>\n<input type="button" value="Check" id="checkBtn"><\/code><\/pre><\/div>\n\n\n\n\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u30fbJavaScript\u3011<\/strong><\/p>\n\n\n\nconst sampleObj = [\n {id: 1, name: '\u5c71\u7530\u592a\u90ce', tel: '09077875423'},\n {id: 2, name: '\u4f0a\u85e4\u821e\u5b50', tel: '08056750034'},\n {id: 3, name: '\u7530\u4e2d\u6b21\u90ce', tel: '09062369975'},\n {id: 4, name: '\u9234\u6728\u660e\u7f8e', tel: '09010879696'},\n {id: 5, name: '\u4f50\u85e4\u60a0\u592a', tel: '08023975362'}\n];\n\nconst text = document.getElementById('telText');\nconst checkBtn = document.getElementById('checkBtn');\n\ncheckBtn.addEventListener('click', () => {\n const result = sampleObj.find(item => item.tel === text.value);\n console.log(result);\n});<\/code><\/pre><\/div>\n\n\n\nfind\u306b\u985e\u4f3c\u306e\u6a5f\u80fd\u3092\u6301\u3064\u30e1\u30bd\u30c3\u30c9<\/h2>\n\n\n\n
JavaScript\u306e\u914d\u5217\u578b\u306b\u306f\u3001find\u30e1\u30bd\u30c3\u30c9\u306b\u4f3c\u305f\u52d5\u304d\u3092\u3059\u308b\u65e2\u5b58\u30e1\u30bd\u30c3\u30c9\u304c\u4ed6\u306b\u3082\u3044\u304f\u3064\u304b\u5b58\u5728\u3057\u307e\u3059\u3002
\u5408\u308f\u305b\u3066\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
filter\u30e1\u30bd\u30c3\u30c9<\/h3>\n\n\n\n
\u5bfe\u8c61\u306e\u914d\u5217\u304b\u3089\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3092\u307e\u3068\u3081\u3066\u53d6\u308a\u51fa\u3057\u305f\u3044\u5834\u5408\u306b\u6d3b\u7528\u3067\u304d\u308b\u306e\u304c\u3001filter\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002
\u4f7f\u7528\u3059\u308b\u969b\u306e\u57fa\u672c\u69cb\u6587\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n\n\u5bfe\u8c61\u914d\u5217.filter(\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570)<\/code><\/pre><\/div>\n\n\n\n\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u306f\u3001find\u30e1\u30bd\u30c3\u30c9\u3068\u540c\u69d8\u306b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002
find\u30e1\u30bd\u30c3\u30c9\u3067\u53d6\u5f97\u3067\u304d\u308b\u8981\u7d20\u304c1\u3064\u3060\u3051\u3067\u3042\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001filter\u30e1\u30bd\u30c3\u30c9\u306e\u5834\u5408\u306f\u3001\u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u3092\u5168\u3066\u542b\u3080\u65b0\u305f\u306a\u914d\u5217\u3092\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleArray = [1, 2, 3, 4, 5];\n\nconst result = sampleArray.filter(num => num > 2);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n[ 3, 4, 5 ]<\/code><\/pre><\/div>\n\n\n\n\u3053\u306e\u3088\u3046\u306b\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u5168\u3066\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3067\u304d\u308b\u306e\u304cfilter\u30e1\u30bd\u30c3\u30c9\u306e\u7279\u5fb4\u3067\u3059\u3002
\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u5206\u3051\u308b\u969b\u306f\u3001\u8981\u7d20\u3092\u5168\u3066\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u5426\u304b\u3067\u5224\u65ad\u3059\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
findIndex\u30e1\u30bd\u30c3\u30c9<\/h3>\n\n\n\n
\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u8981\u7d20\u306e\u5024\u3067\u306f\u306a\u304f\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408\u306b\u6d3b\u7528\u3067\u304d\u308b\u306e\u304c\u3001findIndex\u3067\u3059\u3002<\/p>\n\n\n\n
\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n\n\u5bfe\u8c61\u914d\u5217.findIndex(\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570)<\/code><\/pre><\/div>\n\n\n\n\u57fa\u672c\u7684\u306a\u69cb\u6587\u3084\u52d5\u4f5c\u306f find\u30e1\u30bd\u30c3\u30c9\u3068\u307b\u3068\u3093\u3069\u540c\u3058\u3067\u3059\u304c\u3001findIndex\u30e1\u30bd\u30c3\u30c9\u306e\u5834\u5408\u306f\u3001\u6700\u521d\u306b\u6761\u4ef6\u306b\u4e00\u81f4\u3057\u305f\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleArray = [10, 20, 30, 40, 50];\n\nconst result = sampleArray.findIndex(num => num > 30);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n3<\/code><\/pre><\/div>\n\n\n\n\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u81ea\u4f53\u306f find\u30e1\u30bd\u30c3\u30c9\u3067\u3082\u5b9f\u73fe\u53ef\u80fd\u3067\u3059\u304c\u3001\u5909\u6570\u306b\u4ee3\u5165\u3059\u308b\u306a\u3069\u3057\u305f\u3044\u5834\u5408\u306b\u5225\u9014\u51e6\u7406\u304c\u5fc5\u8981\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002
\u53d6\u5f97\u3057\u305f\u3044\u5185\u5bb9\u306b\u5fdc\u3058\u3066\u3001 findIndex\u30e1\u30bd\u30c3\u30c9\u3068\u4f7f\u3044\u5206\u3051\u308b\u3088\u3046\u306b\u3059\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
some\u30e1\u30bd\u30c3\u30c9<\/h3>\n\n\n\n
some\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6307\u5b9a\u306e\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u304c\u914d\u5217\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002
\u57fa\u672c\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n\n\u5bfe\u8c61\u914d\u5217.some(\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570)<\/code><\/pre><\/div>\n\n\n\n\u5f15\u6570\u306b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u6307\u5b9a\u3059\u308b\u70b9\u3084\u3001\u95a2\u6570\u5185\u3067\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u70b9\u306f find\u30e1\u30bd\u30c3\u30c9\u3068\u540c\u3058\u3067\u3059\u304c\u3001some\u30e1\u30bd\u30c3\u30c9\u306e\u5834\u5408\u306f\u623b\u308a\u5024\u304c\u771f\u507d\u5024\u3067\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleArray = [1, 2, 3, 4, 5];\n\nconst result = sampleArray.some(num => num > 2);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\ntrue<\/code><\/pre><\/div>\n\n\n\n\u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u5426\u304b\u3060\u3051\u3092\u78ba\u8a8d\u3057\u305f\u3044 (\u5024\u3092\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u304c\u7121\u3044) \u5834\u5408\u306b\u3001some\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u51e6\u7406\u306e\u610f\u56f3\u3092\u3088\u308a\u660e\u78ba\u306b\u793a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u307e\u305f\u3001\u6761\u4ef6\u5206\u5c90\u306e\u969b\u306b\u5024\u306e\u6bd4\u8f03\u3092\u3059\u308b\u5fc5\u8981\u304c\u7121\u3044\u305f\u3081\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066 find\u30e1\u30bd\u30c3\u30c9\u3068\u4f7f\u3044\u5206\u3051\u308b\u3068\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
includes\u30e1\u30bd\u30c3\u30c9<\/h3>\n\n\n\n
includes\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u7279\u5b9a\u306e\u5024\u304c\u914d\u5217\u306e\u8981\u7d20\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002
\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n\n\u5bfe\u8c61\u914d\u5217.includes(\u691c\u7d22\u5024, \u691c\u7d22\u958b\u59cb\u4f4d\u7f6e)<\/code><\/pre><\/div>\n\n\n\n\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c\uff11\u5f15\u6570\u306b\u306f\u691c\u7d22\u3057\u305f\u3044\u8981\u7d20\u306e\u5024\u3092\u3001\u7b2c\uff12\u5f15\u6570\u306b\u306f\u4efb\u610f\u3067\u691c\u7d22\u306e\u958b\u59cb\u4f4d\u7f6e (\u30a4\u30f3\u30c7\u30c3\u30af\u30b9) \u3092\u6307\u5b9a\u3057\u307e\u3059\u3002
\u958b\u59cb\u4f4d\u7f6e\u306e\u6307\u5b9a\u304c\u7121\u3044\u5834\u5408\u306f\uff10\u756a\u76ee\u304b\u3089\u306e\u691c\u7d22\u3068\u306a\u308a\u3001\u30de\u30a4\u30ca\u30b9\u5024\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u306f\u672b\u5c3e\u304b\u3089\u9061\u3063\u3066\u6570\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
\u6307\u5b9a\u3057\u305f\u5024\u304c\u914d\u5217\u5185\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u306f true\u3001\u7121\u3044\u5834\u5408\u306f false\u304c\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\nconst sampleStr = "sampleCode";\n\n\/\/ \u90e8\u5206\u4e00\u81f4\u3067\u3082OK\nconsole.log(sampleStr.includes("sample"));\n\n\/\/ \u958b\u59cb\u4f4d\u7f6e\u306e\u6307\u5b9a\u3067\u7d50\u679c\u304c\u5909\u308f\u308b\nconsole.log(sampleStr.includes("sample", 10));\n\n\/\/ \u5927\u6587\u5b57\u3068\u5c0f\u6587\u5b57\u306f\u533a\u5225\u3055\u308c\u308b\nconsole.log(sampleStr.includes("SAMPLE"));<\/code><\/pre><\/div>\n\n\n\n\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\ntrue\nfalse\nfalse<\/code><\/pre><\/div>\n\n\n\n\u6307\u5b9a\u3067\u304d\u308b\u6761\u4ef6\u304c\u9650\u3089\u308c\u308b\u4ee3\u308f\u308a\u306b\u3001find\u30e1\u30bd\u30c3\u30c9\u3084 some\u30e1\u30bd\u30c3\u30c9\u306a\u3069\u3088\u308a\u3082\u30b3\u30fc\u30c9\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n
\u307e\u3068\u3081<\/h2>\n\n\n\n
\u4eca\u56de\u306f\u3001JavaScript\u306e find\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
JavaScript\u306e\u914d\u5217\u306b\u306f\u69d8\u3005\u306a\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u76ee\u7684\u306b\u5fdc\u3058\u305f\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u3001\u3088\u308a\u52b9\u7387\u306e\u826f\u3044\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u3053\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u5185\u5bb9\u3092\u542b\u3081\u3001\u4eca\u5f8c\u306e\u958b\u767a\u306b\u6d3b\u304b\u305b\u308b\u3088\u3046\u3001\u30e1\u30bd\u30c3\u30c9\u3054\u3068\u306e\u7279\u5fb4\u3092\u3057\u3063\u304b\u308a\u3068\u628a\u63e1\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
JavaScript\u306e\u52c9\u5f37\u65b9\u6cd5\u306f\uff1f<\/h2>\n\n\n
\u66f8\u7c4d\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u5b66\u7fd2\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u6628\u4eca\u3067\u306f\u3001YouTube\u306a\u3069\u306e\u52d5\u753b\u30b5\u30a4\u30c8\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30a4\u30c8\u306a\u3069\u3082\u5145\u5b9f\u3057\u3066\u3044\u3066\u591a\u304f\u306e\u60c5\u5831\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002
\u305d\u3057\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3059\u308b\u306b\u306f\u3001\u77e5\u8b58\u3092\u3064\u3051\u306a\u304c\u3089\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u307f\u308b\u306a\u3069\u3001\u30a4\u30f3\u30d7\u30c3\u30c8\u3068\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u72ec\u5b66\u306e\u5834\u5408\u306f\u3001\u6709\u8b58\u8005\u306b\u8cea\u554f\u304c\u3067\u304d\u305f\u308a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u3082\u3089\u3048\u308b\u3088\u3046\u306a\u74b0\u5883\u304c\u3042\u308b\u3068\u3001\u7406\u89e3\u5ea6\u304c\u6df1\u307e\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n
\u305f\u3060\u3001JavaScript\u306b\u9650\u3089\u305a\u3001IT\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u969b\u3001\u3069\u3046\u3057\u3066\u3082\u8ab2\u984c\u306b\u3076\u3064\u304b\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u7279\u306b\u72ec\u5b66\u3060\u3068\u3001\u308f\u304b\u3089\u306a\u3044\u90e8\u5206\u3092\u30d7\u30ed\u306b\u8cea\u554f\u3067\u304d\u308b\u6a5f\u4f1a\u3092\u78ba\u4fdd\u3057\u306b\u304f\u304f\u3001\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u304c\u7d9a\u304d\u306b\u304f\u3044\u3068\u3044\u3046\u5074\u9762\u304c\u3042\u308a\u307e\u3059\u3002\u72ec\u5b66\u3067\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3059\u308b\u81ea\u4fe1\u304c\u306a\u3044\u4eba\u306b\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3068\u3044\u3046\u624b\u3082\u3042\u308a\u307e\u3059\u3002\u8cbb\u7528\u306f\u639b\u304b\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u5206\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u3084\u3059\u3044\u3067\u3059\u3002\u3057\u3063\u304b\u308a\u3068\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3057\u3066\u5b9f\u8df5\u306b\u6d3b\u304b\u3057\u305f\u3044\u3068\u3044\u3046\u4eba\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n
\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u306a\u3089\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u304c\u304a\u3059\u3059\u3081\uff01<\/strong><\/span><\/p>\n\n\n![\"\"](\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/yuudou.png\")
\n\n\nIT\u30b9\u30ad\u30eb\u9700\u8981\u306e\u9ad8\u307e\u308a\u3068\u3068\u3082\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3082\u5897\u3048\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3069\u306e\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3046\u3079\u304d\u304b\u8ff7\u3063\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u3093\u306a\u65b9\u306b\u306f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\uff01\u3053\u308c\u307e\u3067\u591a\u304f\u306eIT\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u80b2\u6210\u30fb\u8f29\u51fa\u3057\u3066\u304d\u305f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3067\u3082\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3092\u958b\u8b1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\n\uff1c\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306e\u7279\u5fb4\uff1e<\/strong>
\u30fb\u305f\u3057\u304b\u306a\u80b2\u6210\u5b9f\u7e3e\u3068\u89aa\u8eab\u306a\u6559\u80b2\u3000\uff5e\u30bb\u30ab\u30f3\u30c9\u30ad\u30e3\u30ea\u30a2\u3092\u5168\u529b\u652f\u63f4\uff5e<\/strong>
\u30fb\u8b1b\u5e2b\u304c\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u3000\uff5e\u201c\u672c\u5f53\u201d\u306e\u958b\u767a\u30ce\u30a6\u30cf\u30a6\u3092\u76f4\u306b\u5b66\u3079\u308b\uff5e<\/strong>
\u30fb\u5c02\u5c5e\u8b1b\u5e2b\u304c\u5b66\u7fd2\u3092\u5fb9\u5e95\u30b5\u30dd\u30fc\u30c8\u3000\uff5e\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3092\u5fb9\u5e95\u89e3\u6c7a\uff5e<\/strong>
\u30fb\u5b9f\u52d9\u30d9\u30fc\u30b9\u3067\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3000\uff5e\u5b9f\u8df5\u7684\u306a\u51dd\u7e2e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\uff5e<\/strong><\/p>\n<\/div>\n