28 lines
520 B
JavaScript
28 lines
520 B
JavaScript
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/**
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*
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* @authors yutent (yutent@doui.cc)
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* @date 2017-02-27 21:56:03
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*
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*/
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"use strict";
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// 判断数组是否包含指定元素
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if(!Array.prototype.includes){
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Object.defineProperty(Array.prototype,
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'includes',
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{
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value: function(val){
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for(let it of this){
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if(it === val)
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return true
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}
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return false
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},
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enumerable: false,
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writable: true
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})
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}
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