{"id":3183,"date":"2017-06-08T10:00:26","date_gmt":"2017-06-08T01:00:26","guid":{"rendered":"https:\/\/www.sria.co.jp\/blog\/?p=3183"},"modified":"2017-06-20T11:33:33","modified_gmt":"2017-06-20T02:33:33","slug":"setinterval","status":"publish","type":"post","link":"https:\/\/www.sria.co.jp\/blog\/2017\/06\/setinterval\/","title":{"rendered":"\u7b2c5\u56de\u3000\u30a8\u30c7\u30a3\u30bf\u30fc\u304c\u5b66\u3076\u521d\u3081\u3066\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\uff08JavaScript\u7de8 \u95a2\u6570\u306e\u5b9f\u884c\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u5b9a\u3081\u308b\uff09"},"content":{"rendered":"<p>\u5148\u65e5\u3001\u81ea\u5206\u306e\u53e3\u7656\u304c\u300c\u3061\u306a\u307f\u306b\u300d\u3067\u3042\u308b\u3053\u3068\u306b\u6c17\u3065\u3044\u305f\u30a8\u30c7\u30a3\u30bf\u30fc\u82e5\u6801\u3067\u3059\u3002<br \/>\n\u30a8\u30c7\u30a3\u30bf\u30fc\u304c\u5b66\u3076\u521d\u3081\u3066\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7b2c5\u56de\u3002<a href=\"https:\/\/www.sria.co.jp\/blog\/2017\/06\/javascript-if\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u7b2c4\u56de<\/a>\u306b\u7d9a\u304d\u3001\u4eca\u56de\u3082\u30b9\u30ed\u30c3\u30c8\u30b2\u30fc\u30e0\u3092\u6539\u4fee\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u7740\u624b\u3059\u308b\u306e\u306f\u3001\u753b\u50cf\u306e\u5207\u308a\u66ff\u308f\u308a\u51e6\u7406\u306e\u90e8\u5206\u3002\u4eca\u306fsetTimeout()\u3092\u4f7f\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true\">\/\/\u30b9\u30ed\u30c3\u30c8\u3092\u52d5\u304b\u3059\u7b87\u6240\u306e\u307f\u629c\u7c8b\r\nvar timerID;\r\nvar picture1 = null;\r\nvar picture2 = null;\r\nvar picture3 = null;\r\n \r\nfunction start_slot() {\r\n  picture1 = Math.floor(Math.random() * 3 + 1);\r\n  picture2 = Math.floor(Math.random() * 3 + 1);\r\n  picture3 = Math.floor(Math.random() * 3 + 1);\r\n \r\n  document.getElementById('slot1').src = \"img\/\" + picture1 + \".png\";\r\n  document.getElementById('slot2').src = \"img\/\" + picture2 + \".png\";\r\n  document.getElementById('slot3').src = \"img\/\" + picture3 + \".png\";\r\n \r\n  timerID = setTimeout(start_slot, 80);\r\n}<\/pre>\n<p>\u4e0a\u3067\u4f7f\u3063\u3066\u3044\u308bsetTimeout()\u4ee5\u5916\u306b\u3082\u3001JavaScript\u306b\u306f\u51e6\u7406\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u6c7a\u3081\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>setTimeout\uff1a\u6307\u5b9a\u3057\u305f\u6642\u9593\u304c\u7d4c\u904e\u3057\u305f\u3089\u3001\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u30661\u56de\u3060\u3051\u5b9f\u884c\u3059\u308b<\/li>\n<li>setInterval\uff1a\u6307\u5b9a\u3057\u305f\u6642\u9593\u306e\u9593\u9694\u3067\u3001\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3059\u308b\u2190\u4eca\u56de\u306f\u3053\u3061\u3089\u3092\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>setInterval\u306f\u3001\u8a2d\u5b9a\u3057\u305f\u79d2\u6570\u306e\u9593\u9694\u3067\u3001\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u5b9f\u884c\u3055\u305b\u307e\u3059\u3002<br \/>\n\u8a2d\u5b9a\u3092\u30aa\u30d5\u306b\u3059\u308b\u307e\u3067\u30015\u5206\u304a\u304d\u3068\u304b8\u5206\u304a\u304d\u306b\u9cf4\u308a\u7d9a\u3051\u308b\u76ee\u899a\u307e\u3057\u30a2\u30e9\u30fc\u30e0\u306e\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<br \/>\n\u8aad\u307f\u306f\u3001\u305b\u3063\u3068\u3044\u3093\u305f\u30fc\u3070\u308b\u3002\u30d5\u30a9\u30f3\u30c8\u306b\u3088\u3063\u3066\u3001\u5927\u6587\u5b57\u306eI\u3068\u5c0f\u6587\u5b57\u306el\u304c\u533a\u5225\u3057\u306b\u304f\u3044\u6642\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u304a\u6c17\u3092\u3064\u3051\u4e0b\u3055\u3044\u3002<\/p>\n<p>\u3088\u3057\u3001\u3058\u3083\u3042setTimeout\u3092setInterval\u3078\u7f6e\u304d\u63db\u3048\u3066\u307f\u3088\u3046\uff01\u3068\u66f8\u3044\u305f\u30b3\u30fc\u30c9\u304c\u3053\u3061\u3089\u3067\u3059\u3002<br \/>\n<strong>\uff08\u6ce8\u610f\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306f\u9593\u9055\u3063\u305f\u4f8b\u306a\u306e\u3067\u5b9f\u884c\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\uff08\u6ce8\u610f\uff09<\/strong><\/p>\n<pre class=\"lang:js decode:true \">\/\/\u30b9\u30ed\u30c3\u30c8\u753b\u50cf\u3092\u56de\u3059\u90e8\u5206\u306e\u307f\u629c\u7c8b\r\nvar timerID = null;\u3000\r\nvar picture1 = null;\r\nvar picture2 = null;\r\nvar picture3 = null;\r\n\r\nfunction start_slot(){\r\n  timerID = setInterval(start_slot, 80);\r\n  picture1 = Math.floor(Math.random() * 3 + 1);\r\n  picture2 = Math.floor(Math.random() * 3 + 1);\r\n  picture3 = Math.floor(Math.random() * 3 + 1);\r\n\r\n  document.getElementById('slot1').src = \"img\/\" + picture1 + \".png\";\r\n  document.getElementById('slot2').src = \"img\/\" + picture2 + \".png\";\r\n  document.getElementById('slot3').src = \"img\/\" + picture3 + \".png\";\r\n}<\/pre>\n<p>\u52d5\u304d\u307e\u3057\u305f\u3001\u6700\u521d\u306e\u6570\u79d2\u3060\u3051\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u306f\u52d5\u4f5c\u304c\u91cd\u304f\u306a\u308a\u3001\u753b\u50cf\u306f\u5207\u308a\u66ff\u308f\u3089\u306a\u3044\u4e0a\u3001\u753b\u9762\u3092\u9589\u3058\u308b\u306e\u306b\u3082\u6570\u79d2\u304b\u304b\u308b\u59cb\u672b\u30027\u884c\u76ee\u30688\u884c\u76ee\u3092\u3088\u304f\u898b\u308b\u3068\u3001<\/p>\n<pre class=\"lang:js decode:true\">function start_slot(){\r\n  timerID = setInterval(start_slot, 80);<\/pre>\n<p>start_slot()\u306e\u4e2d\u3067\u3001\u3055\u3089\u306b0.08\u79d2\u3054\u3068\u306bstart_slot()\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u51e6\u7406\u304c\u91cd\u8907\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u4f55\u5ea6\u3082\u540c\u3058\u51e6\u7406\u304c\u8d70\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u4ee5\u4e0b\u3067\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u753b\u50cf\u3092\u8868\u793a\u3055\u305b\u308b\u305f\u3081\u306e\u95a2\u6570slotting()\u3092\u65b0\u305f\u306b\u4f5c\u308a\u3001start_slot()\u306e\u5916\u306b\u51fa\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"lang:js decode:true\">function slotting() {\r\n  picture1 = Math.floor(Math.random() * 3 + 1);\r\n  picture2 = Math.floor(Math.random() * 3 + 1);\r\n  picture3 = Math.floor(Math.random() * 3 + 1);\r\n\r\n  document.getElementById('slot1').src = \"img\/\" + picture1 + \".png\";\r\n  document.getElementById('slot2').src = \"img\/\" + picture2 + \".png\";\r\n  document.getElementById('slot3').src = \"img\/\" + picture3 + \".png\";\r\n}\r\n\r\nfunction start_slot() {\r\n  timerID = setInterval(slotting, 80);\r\n}<\/pre>\n<p>\u3053\u308c\u3067\u3001\u51e6\u7406\u304c\u91cd\u304f\u306a\u308b\u3053\u3068\u306a\u304f\u9806\u8abf\u306b\u52d5\u304d\u307e\u3057\u305f\u3002\u6b21\u306f\u753b\u50cf\u5207\u308a\u66ff\u3048\u3092\u6b62\u3081\u308b\u51e6\u7406\u3078\u79fb\u308a\u307e\u3059\u3002<\/p>\n<p>setInterval\u306f\u3001\u300c\u3082\u3046\u3084\u3081\u3066\u3044\u3044\u3088\u300d\u3068\u3044\u3046\u6307\u793a\u304c\u98db\u3076\u307e\u3067\u3001\u6307\u5b9a\u306e\u9593\u9694\u3067\u95a2\u6570\u3092\u5b9f\u884c\u3057\u7d9a\u3051\u307e\u3059\u3002<br \/>\n\u3053\u306e\u300c\u3082\u3046\u3084\u3081\u3066\u3044\u3044\u3088\u300d\u306b\u3042\u305f\u308b\u306e\u304c\u3001clearInterval\u3067\u3059\u3002\u8a2d\u5b9a\u3057\u305f\u9593\u9694\u3092clear\u3057\u3066\u3001\u51e6\u7406\u3092\u6b62\u3081\u307e\u3059\u3002<br \/>\nsetTimeout\u306fclearTimeout\u3068\u3001setInterval\u306fclearInterval\u3068\u30bb\u30c3\u30c8\u3001\u3068\u899a\u3048\u308b\u3068\u3088\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u5148\u306b\u3001\u5b8c\u6210\u5f62\u306e\u30b3\u30fc\u30c9\u3092\u8f09\u305b\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true\">var timerID = null;\u3000\r\nvar picture1 = null;\r\nvar picture2 = null;\r\nvar picture3 = null;\r\n\r\nfunction slotting() {\r\n  picture1 = Math.floor(Math.random() * 3 + 1);\r\n  picture2 = Math.floor(Math.random() * 3 + 1);\r\n  picture3 = Math.floor(Math.random() * 3 + 1);\r\n\r\n  document.getElementById('slot1').src = \"img\/\" + picture1 + \".png\";\r\n  document.getElementById('slot2').src = \"img\/\" + picture2 + \".png\";\r\n  document.getElementById('slot3').src = \"img\/\" + picture3 + \".png\";\r\n}\r\n\r\nfunction start_slot() {\r\n  if (timerID === null) {\r\n    timerID = setInterval(slotting, 80);\r\n  }\r\n}\r\n\r\nfunction stop_slot() {\u3000\r\n  if (timerID !== null) {\r\n    clearInterval(timerID);\r\n    timerID = null;\r\n    if (picture1 === picture2 &amp;&amp; picture2 === picture3) {\r\n      window.open(\"ooatari.html\");\r\n    }\r\n  }\r\n}\r\n\r\n<\/pre>\n<p>start_slot()\u3082stop_slot()\u3082\u3001\u6570\u884c\u5897\u3048\u3066\u3044\u307e\u3059\u304c\u8ffd\u3063\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u307e\u305a\u306f24\u884c\u76ee\u306eclearInterval\u304b\u3089\u3002<\/p>\n<pre class=\"lang:js decode:true\" title=\"9\u884c\u76ee\u306e\u307f\u629c\u7c8b\">clearInterval(timerID);<\/pre>\n<p>\u300csetInterval(slotting, 80)\u3000\u3067\u52d5\u3044\u3066\u3044\u308b\u3093\u3060\u304b\u3089\u3001clearInterval(slotting)\u3058\u3083\u3060\u3081\u306a\u306e\uff1f\u300d\u3068\u601d\u3063\u305f\u65b9\u3002<br \/>\n\u3060\u3081\u306a\u3093\u3067\u3059\u30fb\u30fb\u30fbsetInterval\u3067\u59cb\u3081\u305f\u51e6\u7406\u3092\u6b62\u3081\u308b\u306b\u306f\u3001setInterval\u306e\u623b\u308a\u5024\u3092clearInterval\u306b\u5165\u308c\u308b\u3001\u306e\u304c\u6b63\u89e3\u3002<br \/>\n\u672c\u30d6\u30ed\u30b0\u306e\u7b2c2\u56de\u3067\u306f\u3053\u306e\u70b9\u306b\u89e6\u308c\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001setTimeout\u3082\u540c\u3058\u3067\u3059\u3002<\/p>\n<h2>\u623b\u308a\u5024\u3068\u306f<\/h2>\n<p>\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u51e6\u7406\u3055\u308c\u305f\u5f8c\u306b\u3001\u623b\u3063\u3066\u304f\u308b\u5024\u306e\u3053\u3068\u3002<br \/>\n\u8fd4\u308a\u5024\u3068\u3082\u8a00\u3046\u3088\u3046\u3067\u3059\u304c\u82f1\u8a9e\u3060\u3068return\u306a\u306e\u3067\u3001\u3069\u3063\u3061\u3067\u3082\u826f\u3055\u305d\u3046\u3002\u3053\u306e\u30d6\u30ed\u30b0\u3067\u306f\u623b\u308a\u5024\u3001\u3067\u7d71\u4e00\u3057\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u5909\u6570timerID\u3067\u623b\u308a\u5024\u3092\u53d7\u3051\u53d6\u3063\u3066\u3001\u30b9\u30ed\u30c3\u30c8\u52d5\u4f5c\u306e\u5236\u5fa1\u306b\u3082\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u4ee5\u4e0b\u3001\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\u3057\u3066\u3001\u3069\u3046\u3044\u3046\u51e6\u7406\u3092\u3057\u3066\u3044\u308b\u304b\u3092\u88dc\u8db3\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true\">var timerID = null;\u3000\/\/timerID\u3068\u3044\u3046\u5909\u6570\u3092\u4f7f\u3044\u307e\u3059\uff01\u3068\u5ba3\u8a00\r\n\r\n\/\/\u9014\u4e2d\u7701\u7565\r\n\r\nfunction start_slot() {\r\n  if (timerID === null) { \/\/\u3082\u3057\u30b9\u30ed\u30c3\u30c8\u304c\u52d5\u3044\u3066\u3044\u306a\u304b\u3063\u305f\u3089\r\n    timerID = setInterval(slotting, 80);\/\/0.08\u79d2\u9593\u9694\u3067slotting\uff08\uff09\u3092\u51e6\u7406\u3057\u3066\u3001\u623b\u308a\u5024\u3092timerID\u306b\u5165\u308c\u308b\r\n  }\r\n}\r\n\r\nfunction stop_slot() {\u3000\r\n  if (timerID !== null) {\r\n    clearInterval(timerID);\r\n    timerID = null;\r\n    \/\/ \u4ee5\u4e0b\u7701\u7565\r\n  }\r\n}\r\n\r\n<\/pre>\n<p>timerID\u306b\u5165\u3063\u3066\u3044\u308b\u5024\u304c\u3001null\u304b\u305d\u308c\u4ee5\u5916\u304b\u3067\u3001\u30b9\u30ed\u30c3\u30c8\u304c\u6b62\u307e\u3063\u3066\u3044\u308b\u304b\u52d5\u3044\u3066\u3044\u308b\u304b\u3001\u3082\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<br \/>\n\u7d50\u679c\u3001\u3082\u3068\u3082\u3068\u3042\u3063\u305f\u4ee5\u4e0b\u306e\u4e0d\u5177\u5408\u3082\u89e3\u6d88\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u3042\u305f\u308a\u304c\u51fa\u305f\u753b\u9762\u3067\u30b9\u30c8\u30c3\u30d7\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u3001\u3042\u305f\u308a\u5224\u5b9a\u304c\u51fa\u3066\u3057\u307e\u3046\u3002<\/li>\n<li>\u30b9\u30bf\u30fc\u30c8\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u6570\u3060\u3051\u3001\u7d75\u67c4\u306e\u5207\u308a\u66ff\u308f\u308a\u304c\u65e9\u304f\u306a\u308b\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3067\u6700\u521d\u306b\u4f5c\u3063\u305f\u30b9\u30ed\u30c3\u30c8\u3088\u308a\u3082\u3001\u5b8c\u6210\u5ea6\u304c\u9ad8\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u3084\u3063\u305f\uff01\uff01<br 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