JQuery实现ajax的get请求实例:
jquery实现get请求判断用户名是否存在
用户名不可用时:
代码:
PHP代码:
<?php if (empty($_GET)) { exit(); } $un = $_GET['un']; echo in_array($un , array('lishi','wangwu'))?1:0; ?>
HTML代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <h1>jquery ajax请求</h1> <input type="text" name="username"><span id="xiao"></span><br><br> <input type="text" name=""> </body> <script type="text/javascript" src="jquery-3.4.1.js"></script> <script type="text/javascript"> //author:无陌然 blog:aidezy.com //jquery的ajax get请求 $('input:first').blur(function(){ var url = '11.php?un=' + $(this)[0].value; $.get(url , function(msg){ // alert(msg); if (msg == 0) { $('#xiao').html('<font color="greey">可用</font>'); }else{ $('#xiao').html('<font color="red">不可用</font> '); } }) }); </script> </html>
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