Home > Article > Backend Development > onclick event in corresponding button in PHP

onclick event in corresponding button in PHP

王林forward: 2019-08-22 14:33:524147browse

PHP is server-side code, and html is client-side code. To implement the button's onclick event, the client calls the server-side function, so it must submit a request to the server.

There is a simple and crude way, that is, when the button is an a tag, you can directly write the PHP page to be executed in the href (or jump to PHP through JS by binding window.location to the button) . This approach requires designing a PHP code for each button.

My approach is: bind the click event to the button with event ajax, and then execute ajax.

1, server.php

<?php 
	if (isset($_POST[&#39;action&#39;]))
	{
		switch($_POST[&#39;action&#39;])
		{
			case "btn1":btn1();break;
			case "btn2":btn2();break;
			default:break;
		}
	}
	
	function btn1()
	{
		echo "hello 按钮1";
	}
	function btn2()
	{
		echo "hello 按钮2";
	}
 
?>

Method 1: index.php

<html>
<head>
	<style>
	div {width:600px;margin:200px auto;}
	
	.btn {
		background-color:#44c767;
		-moz-border-radius:28px;
		-webkit-border-radius:28px;
		border-radius:28px;
		border:1px solid #18ab29;
		display:inline-block;
		cursor:pointer;
		color:#ffffff;
		font-family:Arial;
		font-size:17px;
		padding:16px 31px;
		text-decoration:none;
		text-shadow:0px 1px 0px #2f6627;
	}
	.btn:hover {
		background-color:#5cbf2a;
	}
	.btn:active {
		position:relative;
		top:1px;
	}
	
	#btn2 {float:right;}
	
	</style>
	
	<script type="text/javascript" language="javascript" src="jquery.js"></script>
	<script type="text/javascript" language="javascript">
		function fun(n) {
			$.ajax({
				url:"server.php", 			//the page containing php script
				type: "POST", 				//request type
				data:{action: n.value},
				success:function(result){
					alert(result);
				}
			});
		}
		
		function fun2(n) {
			var url = "server.php";
			var data = {
				action : n.value
			};
			jQuery.post(url, data, callback);
		}
		function callback(data) {
			alert(data);
		}
	</script>
</head>
 
<body>
	<div>
		<button type="button" class="btn" id="btn1" οnclick="fun(this)"  value="btn1">按钮1</button>
		<button type="button" class="btn" id="btn2" οnclick="fun2(this)" value="btn2">按钮2</button>
	</div>
</body>
 
 
</html>

Method two: index.php

<html>
<head>
	<style>
		div {width:600px;margin:200px auto;}
		
		.btn {
			background-color:#44c767;
			-moz-border-radius:28px;
			-webkit-border-radius:28px;
			border-radius:28px;
			border:1px solid #18ab29;
			display:inline-block;
			cursor:pointer;
			color:#ffffff;
			font-family:Arial;
			font-size:17px;
			padding:16px 31px;
			text-decoration:none;
			text-shadow:0px 1px 0px #2f6627;
		}
		.btn:hover {
			background-color:#5cbf2a;
		}
		.btn:active {
			position:relative;
			top:1px;
		}
		
		#btn2 {float:right;}
	</style>
	<script type="text/javascript" language="javascript">
		var xmlHttp;  
		function createXMLHttpRequest(){ 
			//检查浏览器是否支持 XMLHttpRequest 对象
			if(window.ActiveXObject){  
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");  
			}  
			else if(window.XMLHttpRequest){  
				xmlHttp = new XMLHttpRequest();  
			}  
		}  
		function fun(n){  
			createXMLHttpRequest();  
			var url="server.php";  
			xmlHttp.open("POST",url,true); 
			xmlHttp.setRequestHeader(&#39;Content-type&#39;, &#39;application/x-www-form-urlencoded&#39;);
			xmlHttp.onreadystatechange = callback;  
			xmlHttp.send("action=" + n.value);  
		}  
		function callback(){  
			if(xmlHttp.readyState == 4){  
				if(xmlHttp.status == 200){  
					alert(xmlHttp.responseText);   
				}  
			}  
		} 
	</script>
</head>
 
<body>
	<div>
		<button type="button" class="btn" id="btn1" οnclick="fun(this)" value="btn1">按钮1</button>
		<button type="button" class="btn" id="btn2" οnclick="fun(this)" value="btn2">按钮2</button>
	</div>
</body>
 
 
</html>

Method one reference:

jQuery ajax - post() method:

http://www.w3school.com.cn/jquery/ajax_post.asp

Method 2 Reference:

Create XMLHttpRequest Object:

http://www.w3school.com.cn/ajax/ajax_xmlhttprequest_create.asp

Send request to the server:

http://www.w3school.com.cn/ajax/ajax_xmlhttprequest_send.asp

Server response:

http://www.w3school.com.cn /ajax/ajax_xmlhttprequest_response.asp

onreadystatechange event:

http://www.w3school.com.cn/ajax/ajax_xmlhttprequest_onreadystatechange.asp

For more related questions, please visit the PHP Chinese website: PHP Video Tutorial

The above is the detailed content of onclick event in corresponding button in PHP. For more information, please follow other related articles on the PHP Chinese website!

php jquery ajax html JS 对象事件 location href http

Statement：

This article is reproduced at:csdn.net. If there is any infringement, please contact admin@php.cn delete

Previous article：The relationship between php classes and objectsNext article：The relationship between php classes and objects

See more

onclick event in corresponding button in PHP

Related articles