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//JS´úÂë
function checkname() {
    var Msg = document.getElementById("d_username");
    var chk = CheckN();
    if (chk) {
        $.ajax({ url: 'registerOK.aspx',
            type: 'POST',
            data: { lb: "checkname", username: $("#username").val() },
            dataType: 'html',
            timeout: 1000,
            error: function() { alert('³öÏÖδ֪´íÎó¡£'); },
            success: function(data) {
                if (data == "¶Ô²»Æð£¬¸ÃÓû§ÃûÒѱ»×¢²á£¡") {
                    Msg.className = "d_err";
                    Msg.innerHTML = data;
                    $("#hiddencheckname").val("no");
                }
                if (data == "¹§Ï²£¬¸ÃÓû§Ãû¿ÉÒÔ×¢²á£¡") {
                    Msg.className = "d_ok";
                    Msg.innerHTML = data;
               &


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Ajax(ÅжÏä¯ÀÀÆ÷´´½¨XMLHttpRequest¶ÔÏó)

<script type="text/javascript">
function ajaxFunction()
{
var xmlHttp
;

try
    {
   // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
catch (e)
    {
  // Internet Expl ......

ajax?

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