Type setting for jquery. Post usage

When you use ajax to fetch data, you can get it directly from data.foo. The lower version of jquery doesn't work like before 1.4

 
$.post('/admin/UserBookView.do', {}, function(data) { 
console.info(data); 
}); 

Print the data information and display the string in json format, as follows:

 
{"acceptIs":null,"entity":null,"refuseIs":null,"result":{"pageSize":10, 
"resultList":[{"PRICE":3,"WCTIME":null,"NOTE":" Integral anomaly ","CKTIME":null,"CUSER":"admin", 
"CTIME":"2013/12/30 17:03:16","PHONE":"13111050937","ADDR":" Address of the test ","CUSERID":"1","SLTIME":null}], 
"resultListArray":null,"titles":["ID","CTIME","STATE""PRICE","NOTE"],"totalPage":1,"totalSize":4}, 
"source":null,"storageIs":null,"treeNodes":null} 

If type is not set, the default data returned is of type text

When we use data. To try to get the value inside, we return undefined

Here are two solutions:

One: use the eval function to convert a json string into a json object

 
var datas=eval("("+data+")"); 

Two: specify type

 
$.post('/admin/UserBookView.do', {}, function(data) { 
console.info(data); 
},"json"); 

Higher versions such as 1.8+ do not have this problem and return json objects