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Java code:
if(con.rs.getRow()==0){
response.setContentType("text/xml; charset=UTF-8");
out.print("111");
out.close();
}
else{
response.setContentType("text/xml; charset=UTF-8");
out.print("000");
out.close();
}

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µ«ÊÇÎÒÔÚJSÖÐÒ©½øÐÐÅжϵÄʱºò·¢ÏÖ²»ÄܱȽϣ¬ÏÂÃæÊÇÎÒµÄAJAX´úÂ룺
JScript code:
var res=XMLHttpReq.responseText;
if(res.toString()=="000"){
document.getElementById("userloginnamelabel").innerHTML="¶Ô²»Æð£¬"+document.getElementById("userloginname").value+"Òѱ»×¢²á!";
document.getElementById("usernamehid").Value="0";
}
else if(res.toString()=="111"){
document.getElementById("userloginnamelabel").innerHTML="¹§Ï²Ä㣬"+document.getElementById("userloginname").value+"ÉÐδ±»×¢²á


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AJAX Accordion XMLDataSource

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