$. The success solution cannot be executed for JSON returned by Ajax.

Modification at night Code, Previously used Copy codeThe Code is as follows: $. Ajax ({
..
Datatype: 'json ',
...
Success: function (JSON ){
// Disable success
},
Error: function (error ){
// Always execute this error
}
});

Why? After checking on the Internet for a long time, I found that because I specified the ype: 'json', the specified format is finished and the requirements for JSON are very strict, at first, my JSON format was written as follows: "{result: {\" Success \ ": \" True \ ", \" Meg \": \ "Success \"} ", which cannot be written in this way. You must change it to" {\ "Success \": True, \ "mesg \": \ "Success \"} ". If it is bool type, no quotation marks are required. Other keys/values must be enclosed by quotation marks.