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【JavaScript】setTimeoutを使って処理のスケジューリング

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JavaScriptで指定時間後に処理を実行するにはsetTimeoutを使用します。
#■書き方
第二引数に与えられた実行タイミング(ミリ秒)で、第一引数に定義された処理内容を1度実行します

setTimeout(処理内容,実行タイミング(ミリ秒))

#サンプルコード
以下は実行開始から5秒後にアラート表示される処理です。

example.js

var alertMessage = function(){
  alert("5秒経過しました!");
}
setTimeout(alertMessage, 5000);

#関数に引数を渡す場合

example.js

function hello(name) {
  alert('Hello,' + name);
}
  
setTimeout(hello, 5000, 'Taro');

#コールバック関数を使用する場合

example.js

function hello(name) {
  alert('Hello,' + name);
}

setTimeout(function() {
 hello('Taro');
}, 5000);

#参照
window.setTimeout - Web API インターフェイス | MDN

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