In jquery Ajax invokes the use instructions for JSON data _jquery

$.get () and $.post () the two methods are basically the same use, so just say $.post () this dongdong!
Scenario 1: $.post ("url", function); this time the returned data is not processed, so it is not JSON format!
Case 2:$.post ("url", function, "JSON"); While the returned data is specified in JSON format, it is not!
Case 3:$.post ("url", {},function); The argument passed in is empty, the returned data format is not specified, and is not JSON format!
Case 4:$.post ("url", {},function, "json"); the correct return of data in JSON format!
Important: When you want to treat the returned data as a JSON format, you must pass in the arguments (written {}) and specify the return type "JSON".
$.ajax ({
URL: "url",
DataType: "JSON",
Type: "Get"
Success:function
})
Important: To specify datatype as "JSON", the JSON format data will be available either get or post, but I recommend that you add data:{} for consistency with the above two methods.
$.getjson ("url", function)
Important: Get the way the JSON format data, is $.get () convenient writing bar!