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JS如何判断一个对象为空 - CSDN博客
source link: http://blog.csdn.net/wky_csdn/article/details/77945313
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昨天面试的时候被问到的问题。只怪自己根基不牢，没有回答好。然后面试官提示用for in，突然恍然大悟，然后又查询了网上的一些方法，对这个问题做一下整理。1、最常见的思路，for…in…遍历属性，为真则为“非空数组”；否则为“空数组”var judgeObj = function(obj){ for(var item in obj){ return true; }
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