Question

json内容，该如何循环输出（JS）

{"c4":564,"c6":14,"c7":1,"c1":573}
以上为JSON内容，输出为以下格式，这段JS该如何写？
localStorage[4]=564;
localStorage[6]=14;
localStorage[7]=1;
localStorage[1]=573;

Answer 1

思路

1、获取key值cxxx和对应的value值

2、去掉c，获取数值

3、根据key获取到的数值把对应的value值放入数组中(把字符串转换为整数，parseInt(value,进制);)

var str = {"c4":564,"c6":14,"c7":1,"c1":573};
var localStorage=[];
for(var key in str){
   localStorage[parseInt(key.replace('c',''),10)]=parseInt(str[key],10);
}

Answer 2

<script type="text/javascript">
var json={"c4":564,"c6":14,"c7":1,"c1":573};
var localStorage=[];
for(var item in json){ 
  localStorage[item.replace("c","")] = json[item];
}
alert(localStorage);
</script>

Answer 3

var str="{"c4":564,"c6":14,"c7":1,"c1":573}";
var json=eval(str);
json.c4 取值