Asynchronous transmission of ajax json data in jquery ajax instances

This article will introduce the interaction between ajax and json data. In the past, ajax post, get, AND htm and txt data were directly returned. This is a try to return json data.

In your own background cms, you want to use the pop-up mask layer on the same page to modify member information.

Getting UserID is a big problem

Finally, my colleague suggested using $. ajax.

The Code is as follows:

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$ ('P. editInfo> A'). bind ('click', function (){ $ ('# Edit_uid'). val ($ (this). attr ("uid ")); // Alert ($ (this). attr ("uid ")); Var uid = $ (this). attr ("uid "); // Alert (vote_content ); $. Ajax ({ Type: 'get ', DataType: 'json ', Url: 'user _ edit. php ', Data: 'uid = '+ uid, Success: function (json ){ $ ('# Username'). val (json. username); // assign a value to the corresponding josn. $ ('# Mid_1'). val (json. mid ); $ ('# New_password'). val (json. password ); $ ('# Uid_edit'). val (json. uid ); }, Error: function (){} }); }); });

User_edit.php is a normal php SQL statement.
Use the json_encode function (refer to the php-json_encode)

The Code is as follows:	Copy code
$ Uid = $ _ GET ['uid']; $ Query_admin_1 = $ db-> find ("table where uid = '$ uid '"); $ Row_admin_1 = $ db-> fetch_array ($ query_admin_1 ); $ Userinfo = json_encode ($ row_admin_1 ); Echo $ userinfo;

The resulting $ userinfo is in json data storage format.

Standard html form for receiving json data

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<Div class = "txt-Example"> <Label for = ""> User Name </label> <Input id = "username" class = "good_input" name = "username" type = "text"/> </Div> <Div class = "txt-Example"> <Label for = ""> User Password/label> <Input id = "new_password" name = "new_password" type = "password"/> </Div>

Note that the ajax operation is slightly different from other operations, but only in dataType: 'json'. Then we can use json. the content accessed in the form of mid is actually in the form of an array $ a ['a']. json is a returned array, and mid is the id we return.