ajax简单应用

//获取ajax的xmlHttp

varxmlHttp=false;

try{

xmlHttp=newActiveXObject("Msxml2.XMLHTTP");

}catch(e){

try{

xmlHttp=newActiveXObject("Microsoft.XMLHTTP");

}catch(e2){

xmlHttp=false;

}

}

if(!xmlHttp&&typeofXMLHttpRequest!='undefined'){

xmlHttp=newXMLHttpRequest();

}

//ajax传参，在按钮事件中调用该方法

functionchangeurl(){

varbankname=document.getElementById("bankname").value;

varrepaymount=document.getElementById("repaymount").value;

varurl="cxfresponse.asp?bankname="+bankname+"&repaymount="+repaymount+"&m="+Math.random();

xmlHttp.open("GET",url,true);

xmlHttp.onreadystatechange=getresult;

xmlHttp.send(null);

}

//ajax接收数据

functiongetresult(){

if(xmlHttp.readyState==4){

varresponseword=xmlHttp.responseText;

varword=responseword.split("+");

document.getElementById("repaymount").value=word[0];

document.getElementById("cxf").value=word[1];

document.getElementById("str").innerHTML=word[2];

if(word[2]==""){

document.getElementById("tishi").style.display="none";

}else{

document.getElementById("tishi").style.display="";

}

}

}