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JavaScriptのindexOfで二つ目のindexを得る

Last updated at Posted at 2016-06-15
var str = 'hoge hoge hoge'; // これの二つ目のhogeの位置が知りたい
var idx = str.indexOf('hoge', str.indexOf('hoge') + 1);
console.log(idx); // 5が得られる

indexOfの第二引数が検索を開始する位置なので、もう一個indexOfで探した結果に+1すれば次に出現するhogeの位置がわかるということです。めんどくさいです。

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