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ÎÊÌâ: ÏÖÔÚÌá½»Ö®ºó¾Í²»ÄÜÌøµ½ajax.jsÖÐÖ¸¶¨µÄservlet 
  ¶øÊÇÓÖÖØÐ½øÈëµ½ÁËpub_hotel_t.jspÒ³Ãæ. Ò²¾ÍÊÇûÓÐÖ´Ðе½ajaxÀïÃæÈ¥ ´ó¼Ò°ïæ¿´¿´ÊÇʲôԭÒò°É.
  ÊDz»ÊǺÍÌá½»µÄ°´Å¦ÓйØÄØ, ÎÒ֮ǰÓÃbutton µ«ÊÇclickºó, ¾ÍËµÒ³ÃæÓдíÎó.  
  ÎҾ͸ÄΪsubmitÁË. 
ajax.js
JScript code:

//¶¨ÒåÒì²½ÇëÇó¶ÔÏó
var xmlHttp;
//´´½¨Òì²½ÇëÇó¶ÔÏóµÄº¯Êý
function createXMLHttpRequest() {
if(window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
} else if(window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}

//Ïò·þÎñÆ÷·¢ËÍÒì²½ÇëÇóµÄº¯Êý
function startRequest() {
createXMLHttpRequest(); //µ÷Óô´½¨Òì²½ÇëÇóµÄº¯Êý
var user = document.getElementById("user").value;
var ProjectList = document.getElementById("ProjectList").value;
alert("in start request");
xmlHttp.open("POST", "/Build/BuildServlet.do?user="+user, true);

xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.send(null); //¿ªÊ¼Ïò·þÎñÆ÷·¢ËÍÇëÇó


//ÏëÔÚÌá½»µÄ¹ý³ÌÖÐÌáʾµ½echo.jsp --- ÌáÊ¾Ò³Ãæ
document.getElementById("wait").style.display='';
document.getElementById("main").style.display='none';
}

//´¦Àí·þÎñÆ÷·µ»Ø½á¹ûµÄº¯Êý
function handleStateChange


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