为什么用for就报错了，for in 就问题呢？代码如下
var arr = ["*","##","***","&&","****","##*"];
arr[7] = "**";
for(var i =0;i<arr.length;i++){
if(arr[i][0]=="*"){
console.log(arr[i]);
}
}
紫陌东城
2017-12-11
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