{"id":1875,"date":"2022-05-12T01:15:52","date_gmt":"2022-05-11T16:15:52","guid":{"rendered":"http:\/\/www.agile-software.site\/?p=1875"},"modified":"2023-08-09T14:14:15","modified_gmt":"2023-08-09T05:14:15","slug":"javascript%e7%b5%84%e3%81%bf%e8%be%bc%e3%81%bf%e3%82%aa%e3%83%96%e3%82%b8%e3%82%a7%e3%82%af%e3%83%88","status":"publish","type":"post","link":"https:\/\/agile-software.net\/?p=1875","title":{"rendered":"JavaScript\u7d44\u307f\u8fbc\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8"},"content":{"rendered":"\n
Array<\/td>\u914d\u5217\u3092\u6271\u3046\u305f\u3081\u306e\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b<\/td><\/tr>
String<\/td>\u6587\u5b57\u5217<\/td><\/tr>
Boolean<\/td>\u771f\u507d\u5024<\/td><\/tr>
Number<\/td>\u6570\u5024<\/td><\/tr>
Function<\/td>\u95a2\u6570<\/td><\/tr>
Date<\/td>\u65e5\u4ed8<\/td><\/tr>
RegExp<\/td>\u6b63\u898f\u8868\u73fe<\/td><\/tr>
Object<\/td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/td><\/tr>
Map<\/td><\/td><\/tr>
Headers<\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Date<\/h2>\n\n\n\n
var today = new Date();<\/code><\/pre><\/div>\n\n\n\n
new Date()\u3068\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067Date\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9(\u30b3\u30d4\u30fc)\u3092\u4f5c\u6210\u3002
\u305d\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5909\u6570today\u306b\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067Date\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3002<\/p>\n\n\n\n
today.getFullYear()\u3067\u897f\u66a6\u3092\u53d6\u5f97\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9<\/p>\n\n\n\n
today.getDate()\u3067\u65e5\u4ed8\u3092\u53d6\u5f97\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9<\/p>\n\n\n\n
today.getHours()\u3067\u6642\u9593\u3092\u53d6\u5f97\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9<\/p>\n\n\n\n
\u65e5\u4ed8\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b<\/h3>\n\n\n\n
\u65e5\u4ed8\uff08Date\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09<\/strong>\u304b\u3089\u6587\u5b57\u5217\u3078\u306e\u5909\u63db\u3082\u3001\u6570\u5024\u306e\u5909\u63db\u3068\u540c\u69d8\u306btoString\u30e1\u30bd\u30c3\u30c9\u304c\u5229\u7528\u3067\u304d\u307e\u3059\u3002
toISOString\u30e1\u30bd\u30c3\u30c9<\/strong>\u306fISO\u898f\u683c\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u51fa\u529b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
const date = new Date(); \/\/ \u4eca\u65e5\u306e\u65e5\u4ed8\nconsole.log("\u4eca\u65e5\uff1a" + date.toString());\nconsole.log("\u4eca\u65e5\uff1a" + date.toISOString());<\/code><\/pre><\/div>\n\n\n\n
> "\u4eca\u65e5\uff1aTue Apr 10 2018 00:00:00 GMT+0900 (JST)"\n> "\u4eca\u65e5\uff1a2018-04-09T15:00:00.000Z" \/\/ ISO\u5f62\u5f0f<\/code><\/pre><\/div>\n\n\n\n
Object<\/h2>\n\n\n\n
Object.values()<\/strong>\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5024\u3092\u914d\u5217\u306b\u3057\u3066\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n
const obj = { foo: 'bar', baz: 42 };\nconsole.log(Object.values(obj)); \/\/ ['bar', 42]\n\n\/\/ \u914d\u5217\u98a8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\nconst arrayLikeObj1 = { 0: 'a', 1: 'b', 2: 'c' };\nconsole.log(Object.values(arrayLikeObj1 )); \/\/ ['a', 'b', 'c']\n\n\/\/ \u30e9\u30f3\u30c0\u30e0\u306a\u30ad\u30fc\u9806\u5e8f\u3092\u6301\u3064\u914d\u5217\u98a8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\n\/\/ \u6570\u5024\u306e\u30ad\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5024\u306f\u30ad\u30fc\u306e\u756a\u53f7\u9806\u306b\u8fd4\u3055\u308c\u308b\nconst arrayLikeObj2 = { 100: 'a', 2: 'b', 7: 'c' };\nconsole.log(Object.values(arrayLikeObj2 )); \/\/ ['b', 'c', 'a']\n\n\/\/ \u5217\u6319\u53ef\u80fd\u3067\u306a\u3044\u30d7\u30ed\u30d1\u30c6\u30a3 getFoo \u304c\u3042\u308b\nconst my_obj = Object.create({}, { getFoo: { value: function() { return this.foo; } } });\nmy_obj.foo = 'bar';\nconsole.log(Object.values(my_obj)); \/\/ ['bar']\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306a\u3044\u5f15\u6570\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u3068\u578b\u5f37\u5236\u3055\u308c\u308b\nconsole.log(Object.values('foo')); \/\/ ['f', 'o', 'o']<\/code><\/pre><\/div>\n\n\n\n
Object.values()\u306e\u8fd4\u308a\u5024\u3092\u30eb\u30fc\u30d7\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n
Object.values()<\/strong>\u3067\u751f\u6210\u3055\u308c\u305f\u914d\u5217\u306b\u5bfe\u3057\u3066\u30eb\u30fc\u30d7\u51e6\u7406\u3092\u52a0\u3048\u308b\u306b\u306fforEach()<\/a>\u306a\u3069\u304c\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
let object = {\n  apple: "\u308a\u3093\u3054", \n  banana: "\u30d0\u30ca\u30ca",\n  milk: "\u725b\u4e73"\n};\n\nlet values = Object.values(object);\n\nvalues.forEach(element => {\n  console.log(element);\n});<\/code><\/pre><\/div>\n\n\n\n
\u3053\u306e\u4f8b\u3067\u306fObject.values()\u3067\u751f\u6210\u3055\u308c\u305f\u914d\u5217values<\/strong>\u306bforEach()<\/a>\u3092\u7528\u3044\u3066\u3001
\u305d\u308c\u305e\u308c\u306e\u8981\u7d20\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3059\u308b\u3068\u3044\u3046\u5185\u5bb9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\u3067\u306f\u7d50\u679c\u3092\u898b\u3066\u307f\u308b\u3068\u3001<\/p>\n\n\n\n
\u308a\u3093\u3054\n\u30d0\u30ca\u30ca\n\u725b\u4e73<\/code><\/pre><\/div>\n\n\n\n
Object.values()<\/strong>\u3067\u8fd4\u3055\u308c\u305f\u914d\u5217\u306e\u305d\u308c\u305e\u308c\u306e\u8981\u7d20\u304c\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n\n\n\n
document.documentElement \u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/h2>\n\n\n\n
HTML \u306e\u9818\u57df\u306e\u30b5\u30a4\u30ba\u3092\u5f97\u308b\u306b\u306f document.documentElement \u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/a> \u3092\u53c2\u7167\u3057\u307e\u3059\u3002\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u30eb\u30fc\u30c8\u306e <html><\/code> \u8981\u7d20\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Map<\/h2>\n\n\n\n
Map<\/code>\u306fJavaScript\u306e\u7d44\u307f\u8fbc\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e00\u3064\u3067\u3042\u308a\u3001\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u4fdd\u6301\u3059\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
    \n
  1. \u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\uff1aMap<\/code>\u306f\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u683c\u7d0d\u3057\u307e\u3059\u3002\u30ad\u30fc\u306f\u91cd\u8907\u305b\u305a\u4e00\u610f\u3067\u3042\u308a\u3001\u5024\u306f\u91cd\u8907\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n
  2. \u4efb\u610f\u306e\u30c7\u30fc\u30bf\u578b\u306e\u30ad\u30fc\uff1a\u30ad\u30fc\u306f\u6587\u5b57\u5217\u3084\u6570\u5024\u306b\u9650\u5b9a\u3055\u308c\u305a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u95a2\u6570\u306a\u3069\u3001\u307b\u3068\u3093\u3069\u306e\u30c7\u30fc\u30bf\u578b\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n
  3. \u9806\u5e8f\u3092\u4fdd\u6301\uff1a\u8981\u7d20\u304c\u633f\u5165\u3055\u308c\u305f\u9806\u5e8f\u304c\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u8981\u7d20\u3092\u633f\u5165\u3057\u305f\u9806\u756a\u901a\u308a\u306b\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n
  4. \u52d5\u7684\u30b5\u30a4\u30ba\uff1a\u8981\u7d20\u6570\u306b\u5236\u9650\u304c\u306a\u304f\u3001\u52d5\u7684\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u30fb\u524a\u9664\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n
    const myMap = new Map();<\/code><\/pre><\/div>\n\n\n\n
    myMap.set('key1', 'value1');\nmyMap.set('key2', 'value2');<\/code><\/pre><\/div>\n\n\n\n
    const value = myMap.get('key1'); \/\/ 'value1'<\/code><\/pre><\/div>\n\n\n\n
    myMap.delete('key2');<\/code><\/pre><\/div>\n\n\n\n
    const size = myMap.size;<\/code><\/pre><\/div>\n\n\n\n
    for (const [key, value] of myMap) {\n  console.log(key, value);\n}<\/code><\/pre><\/div>\n\n\n\n
    Headers<\/h2>\n\n\n\n
    Headers<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001HTTP \u30ea\u30af\u30a8\u30b9\u30c8\u3084\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e JavaScript \u306e\u7d44\u307f\u8fbc\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n
    \u30d8\u30c3\u30c0\u30fc\u306e\u8ffd\u52a0\u3068\u53d6\u5f97<\/strong><\/h4>\n\n\n\n
    append()<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d8\u30c3\u30c0\u30fc\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001get()<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u7279\u5b9a\u306e\u30d8\u30c3\u30c0\u30fc\u306e\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
    const headers = new Headers();\nheaders.append("Content-Type", "application\/json");\nconsole.log(headers.get("Content-Type")); \/\/ "application\/json"<\/code><\/pre><\/div>\n\n\n\n
    \u30d8\u30c3\u30c0\u30fc\u306e\u524a\u9664<\/strong><\/h4>\n\n\n\n
    delete()<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u7279\u5b9a\u306e\u30d8\u30c3\u30c0\u30fc\u3092\u524a\u9664\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
    headers.delete("Content-Type");<\/code><\/pre><\/div>\n\n\n\n
    \u30d8\u30c3\u30c0\u30fc\u306e\u4e0a\u66f8\u304d<\/strong><\/h4>\n\n\n\n
    set()<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d8\u30c3\u30c0\u30fc\u306e\u5024\u3092\u4e0a\u66f8\u304d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
    headers.set("Content-Type", "text\/plain");<\/code><\/pre><\/div>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"
    Array \u914d\u5217\u3092\u6271\u3046\u305f\u3081\u306e\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b String \u6587\u5b57\u5217 Boolean \u771f\u507d\u5024 Number \u6570\u5024 Function \u95a2\u6570 Date \u65e5\u4ed8 RegExp \u6b63\u898f\u8868\u73fe Object \u30aa\u30d6\u30b8\u30a7\u30af\u30c8 Map Heade<\/p>\n","protected":false},"author":1,"featured_media":2046,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jin_ogp_image_url":"","_jin_last_featured_id":0,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript"],"_links":{"self":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts\/1875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1875"}],"version-history":[{"count":7,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts\/1875\/revisions"}],"predecessor-version":[{"id":2790,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts\/1875\/revisions\/2790"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/media\/2046"}],"wp:attachment":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}