JavaScript loops to read the code _json of JSON data

The JSON format string returned to the client by the server backend:
var str = ' [{uname ']: "Wang Qiang", "Day": "2010/06/17"},{"uname": "Wang Haiyun", "Day": "2010/06/11"}] ';

We convert it to a JSON object: Var jsonlist=eval ("+str+"); If you use a breakpoint to track the Jsonlist object, you will find that he is 2, that is, jsonlist.length=2. Each of its entries is a separate JSON object. Take a look at the picture below:


Assuming we do not know the two key values of "uname" and "Day", we begin the loop operation on Jsonlist.

Copy Code code as follows:

for (Var i=0;i<jsonlist.length;i++) {

for (var key in Jsonlist[i]) {
Alert ("Key:" +key+ ", Value:" +jsonlist[i][key]);
}
}

So we can easily get the key and value values I need.