checkUserName.js

$(function(){ $("#txtUserName").keyup(function() { var name = $(this).val(); var url = "/Web/handler/checkUserName.ashx?name="+encodeURI(encodeURI(name))+"&t="+new Date().getTime(); $.get(url, function(data) { if (data == "true") { $("#imgFlag").attr("src","/Web/images/false.gif"); $("#ibtnRegister").attr({disabled:"true",alt:"该用户名已被抢注，请更换用户名后再注册"}); $("#spanMsg").html("该用户名已被抢注"); } else { $("#imgFlag").attr("src","/Web/images/right.gif"); $("#ibtnRegister").removeAttr("alt"); $("#ibtnRegister").removeAttr("disabled"); $("#spanMsg").html("该用户名有效"); } }); }); });