var arrayOfNumbers=[1,2,3,4,5,6,78]; for(var index in arrayOfNumbers){ console.log(index+1); }
此示例代码的输出是. 01 11 21 31 41 51 61
为什么在Javascript中这些数组索引被视为字符串?
javascript arrays string indexing
arrays ×1
indexing ×1
javascript ×1
string ×1