json内容，该如何循环输出（JS）？

Question

{"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

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