$(document).ready(function(){
var usernamerepeat =$("#UserName");
$("#UserverifyBotton").click(function(){
var username =usernamerepeat.val();
if (username==""){
alert("请输入用户名");
}else
{
$.get("http//localhost:81/JQuery/Useruerify?UserName="+encodeURI(encodeURI(username)),null,function(response)
{
$("#result").html(response);
} );
};
}
);
usernamerepeat.keyup(function(){
var value = usernamerepeat.val();
if (value==""){
usernamerepeat.addClass("UserName");
}else{
usernamerepeat.removeClass("UserName");
}
})
}
)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<script type="text/javascript" src="js/jquery.js" ></script>
<script type="text/javascript" src="js/Userverify.js"></script>
<script type="text/javascript" src="js/jquery.min.js" ></script>
<link rel="stylesheet" href="css/Useruerify.css" type="text/css">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>jquery Useruerify</title>
请输入用户名:
为什么点击校验 没反应呢！
