时间:2021-07-01 10:21:17 帮助过:9人阅读
废话不多说了,直接给大家贴代码了,具体代码如下所示:
<script src="js/j.js"></script> <script> $(document).ready(function(e) { $('#yes').hide(); $('#no').hide(); $('input[name=gcode]').keyup(function(){ if($(this).val().length==4){ $.post('gbook.php',{cc:$('input[name=gcode]').val()},function(msg){ if(msg=='yes'){ $('#no').hide(); $('#yes').show(); }else{ $('#yes').hide(); $("#no").show(); } }); } }); }); </script>
首先引入jquery
.sl-error-verifycode { background-image: url("images/icons.png"); background-position: -26px 0; background-repeat: no-repeat; display: block; font-size: 18px; height: 23px; line-height: 20px; margin-left: 180px; margin-top: -25px; position: relative; text-align: center; width: 20px; z-index: 2; } .sl-correct-verifycode { background-image: url("images/icons.png"); background-position: -50px 0; background-repeat: no-repeat; display: block; font-size: 18px; height: 23px; line-height: 20px; margin-left: 180px; margin-top: -25px; position: relative; text-align: center; width: 20px; z-index: 2; }
验证码的html 代码
<tr> <td height="40" align="right">验证码:</td> <td height="40"><span class="addred">*</span></td> <td height="40"> <input type="text" name="gcode" id="textfield7" class="txtlist"> <span id="yes" class="sl-correct-verifycode"></span><span id="no" class="sl-error-verifycode"></span> <img style="float:right; margin-top:-25px; margin-right:300px;" align="middle" src="inc/cc.php" onClick="this.src='inc/cc.php?'+new Date" title="点击换一张图片" width="100px"></td> </tr>
gbook.php
<?php session_start(); if(isset($_POST['cc'])){ $cc = strtolower($_POST['cc']); $ss = strtolower($_SESSION['code']); if($cc==$ss){ echo "yes"; }else{ echo "no"; } }
注意图片一定要引入
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