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A detailed explanation of the use of the JQuery Ajax Post ()

Source: Internet
Author: User
Tags http post json php code
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First know to Jquery.post (URL, [data], [callback], [type])

Describe the parameters:

URL: Sends the request address.

Data: Key/value parameter to be sent.

Callback: callback function when sending success.

Type: Returns the content format, XML, HTML, script, JSON, text, _default.

Description

Loads information through a remote HTTP POST request.

This is a simple POST request function to replace the complex $.ajax. Callback functions can be invoked when the request succeeds. If you need to perform a function when an error occurs, use $.ajax.

Let's take a look at a simple example

The code is as follows Copy Code

<?php echo Json_encode (Array ("name" =>$_post[' name '));? >

Then set up ajax.html file, note JS code: www.111cn.net

The code is as follows Copy Code


<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">
<script type= "Text/javascript" src= "/jquery-1.7.1.min.js" ></script>
<script>
$ (document). Ready (function () {
$ ("#sub"). Click (function () {
$.post ("testpost.php", {name:$ ("#name"). Val ()},function (data,textstatus) {
$ ("#result"). Append ("Data:" +data.name);
$ ("#result"). Append ("<br>textstatus:" +textstatus);
}, "JSON");
return false;
});
});
</script>
<body>
<form action= "testpost.php" method= "POST" >
<input type= "text" name= "name" id= "Name" >
<input type= "Submit" id= "sub" value= "submitted" >
</form>
The contents of <div id= "Result" ></div>
</body>

Usage 2: (click Post data to return data)

The code is as follows Copy Code

<input type= "button" id= "Bnajax" value= "Ajax" onclick= "Ajaxtest ()"/>

<script type= "Text/javascript" >

function Ajaxtest ()
{
$.post ("http://localhost:8012/t.asp", {"TXT": "123"},function (data)
{
$ ("#divMsg"). HTML (data);
}
);
}

</script>

Example 3

JS Code:

  code is as follows copy code

<script

$ (document). Ready (function () {

    $ (". Ajax_btn"). Click (function () {

      $.post ("ajax.php",//Asynchronous Processing dynamic page

     {name:$ (". Name"). Val ()},//get the class named " The value of name literal, the value of

     function (data) {//data to return value, function to reverse value,

            $ (". Content"). val (data); When you get a return value, fill it in a text box with the class name "content"

     });

   })

})

</script>

 


ajax.php Code:

The code is as follows Copy Code

<?php

$name =$_post["name"];

if ($name = = "Netxu") {

echo "I'm sorry," $name. " Data exists ";

}

else{

echo "Congratulations," $name. " can use ";

}

?>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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