var testObj = { ‘a‘:‘111‘, ‘b‘:‘222‘, ‘c‘:‘333‘, ‘d‘:‘444‘}for(var i in testObj){ console.log(i); //a,b,c,d}for(var i in testObj){ console.log(testObj[i]); //111,222,333,444
js for in循环遍历对象，获取key:value值
原文：https://www.cnblogs.com/Fourteen-Y/p/10487813.html
