Detailed explanation of the usage of get method and post method in jquery.ajax()-JS Tutorial-php.cn

Detailed explanation of the usage of get method and post method in jquery.ajax()

伊谢尔伦

Release： 2017-06-19 10:19:39

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1. $.get() requests data from the server through HTTP GET request.

Syntax structure:

$.get(url, [data], [callback], [type]);

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Parameter analysis:

1.URL: required, specifies the requested URL.
2.data: Optional, Key/value parameters to be sent.
3.callback: Optional, the callback function executed after the request is successful.
4.type: Optional, return content format, xml, html, script, json, text, _default.

Code example:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.php.cn/" />
<title>php.cn</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script> 
<script type="text/javascript"> 
$(document).ready(function(){
  $("#bt").click(function(){
    $.get("mytest/demo/antzone.txt",function(data,status){
      alert("Data:"+data+"\nStatus:"+status);
    })
  })
})
</script>
</head>
<body>
<input type="button" value="查看效果" id="bt"/>
</body>
</html>

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2. The $.post() method requests data from the server through HTTP POST request.

Syntax structure:

$.post(URL,data,callback);

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Parameter analysis:

1.URL: Must, specifies the URL of the request.
2.data: Optional, specifies the data to be sent with the request.
3.callback: Optional, specifies the function name to be executed after the request is successful.

Code example:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.php.cn/" />
<title>php.cn</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script> 
<script type="text/javascript"> 
$(document).ready(function(){
  $("#bt").click(function(){
    $.post("mytest/demo/antzone.html",function(data,status){
      alert("Data:"+data+"\nStatus:"+status);
    })
  })
})
</script>
</head>
<body>
<input type="button" value="查看效果" id="bt"/>
</body>
</html>

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This is a simple POST request function to replace the complex $.ajax. The callback function can be called when the request is successful. If you need to execute a function on error, use $.ajax.

$.post(
  &#39;http://www.php.cn/ajax.php&#39;,
  {Action:"post",Name:"lulu"},
  function(data,textStatus){
    //data可以是xmlDoc,jsonObj,html,text,等等.
    //this;//这个Ajax请求的选项配置信息，请参考jQuery.get()说到的this
    alert(data.result);
  },
  "json"//这里设置了请求的返回格式为"json"
);

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If you set the request format to "json" and you do not set the ContentType returned by Response to: Response.ContentType = "application/json"; then you will not be able to capture the returned data.

Note that in the above example alert(data.result); since the Accept header is set to "json", the data returned here is an object, so there is no need to use eval() to convert it to object.

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