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How to send post request with jquery

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Release： 2022-04-02 17:13:57

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In jquery, you can use the "$.post()" method to send a post request. The function of this method is to use an HTTP POST request to load data from the server. The syntax is "$(selector).post(URL, data, specifies the function to be run when the request is successful, data type)".

How to send post request with jquery

The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.

How jquery sends a post request

$.post() method uses HTTP POST request to load data from the server.

The syntax is:

$(selector).post(URL,data,function(data,status,xhr),dataType)

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URL required. Specifies the URL to which requests are sent.

data Optional. Specifies the data to be sent to the server with the request.

function(data,status,xhr) Optional. Specifies a function to run when the request succeeds. Additional parameters:

data - Contains the result data from the request
status - Contains the status of the request ("success", "notmodified" , "error", "timeout", "parsererror")
xhr - Contains the XMLHttpRequest object

dataType Optional. Specifies the data type of the expected server response. By default, jQuery will figure it out intelligently. Possible types:

"xml" - an XML document
"html" - HTML as plain text
"text" - a plain text string
"script" - runs the response in JavaScript and returns it as plain text
"json" - Runs the response as JSON and returns it as a JavaScript object
"jsonp" - Loads a JSON chunk using JSONP, which will add a "?callback=?" to the URL to specify Callback

The example is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>123</title>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("input").keyup(function(){
txt=$("input").val();
$.post("demo_ajax_gethint.php",{suggest:txt},function(result){
$("span").html(result);
});
});
});
</script>
</head>
<body>
<p>在以下输入框中输入名字:</p>
第一个名称:
<input type="text" />
<p>匹配项: <span></span></p>
<p>该实例的PHP代码 (<a href="demo_ajax_gethint.txt" target="_blank">demo_ajax_gethint</a>) </p>
</body>
</html>

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Output result:

How to send post request with jquery

Related video tutorial recommendations:jQuery video tutorial

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