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
以上所述是小编给大家介绍的jQuery Ajax显示对号和错号用于验证输入验证码是否正确，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对找一找教程网网站的支持！
