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var http_request=false;
function on_search()
{
var content = document.getElementById("searchname").value;

if( content != "" )
document.getElementById("searchresult").innerHTML="ÕýÔÚËÑË÷...";
else
document.getElementById("searchresult").innerHTML="";

////////////´´½¨http request//////////////////
http_request=false;
//¿ªÊ¼³õʼ»¯XMLHttpRequest¶ÔÏó
if(window.XMLHttpRequest)//Mozillaä¯ÀÀÆ÷
{
http_request=new XMLHttpRequest();
if(http_request.overrideMimeType)
{//ÉèÖÃMIMEÀà±ð
http_request.overrideMimeType("text/xml");
}
}
else if(window.ActiveXObject)//IEä¯ÀÀÆ÷
{
try
{
http_request=new ActiveXObject("Msxml2.XMLHttp");
}
catch(e)
{
try
{
http_request=new ActiveXobject("Microsoft.XMLHttp");
}
catch(e){}
}
}
//Òì³££¬´´½¨¶ÔÏóʵÀýʧ°Ü
if(!http_request)
{
document.getElementById("searchresult").innerHTML="<font color=red>Fault error:´´½¨XMLHttp¶ÔÏóʧ°Ü£¡</font>";
return false;
}

//ÔÚURLÌí¼ÓËæ»úÊý·ÀÖ¹ä¯ÀÀÆ÷cacheÒ³Ãæ
var posturl= "Ajax_test.php?keyword=" + encodeURIComponent(content) + "&random=" + Math.random()*(10000)


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¶àÊý Web Ó¦ÓóÌÐò¶¼Ê¹ÓÃÇëÇó/ÏìӦģÐÍ´Ó·þÎñÆ÷ÉÏ»ñµÃÍêÕûµÄ HTML Ò³Ãæ¡£³£³£Êǵã»÷Ò»¸ö°´Å¥£¬µÈ´ý·þÎñÆ÷ÏìÓ¦£¬ÔÙµã»÷ÁíÒ»¸ö°´Å¥£¬È»ºóÔٵȴý£¬ÕâÑùÒ»¸ö·´¸´µÄ¹ý³Ì¡£ÓÐÁË Ajax ºÍ XMLHttpRequest ¶ÔÏ󣬾ͿÉÒÔʹÓò»±ØÈÃÓû§µÈ´ý·þÎñÆ÷ÏìÓ¦µÄÇëÇó/ÏìӦģÐÍÁË¡£±¾ÎÄÖУ¬Brett McLaughlin ½éÉÜÁËÈçºÎ´´½¨Äܹ»ÊÊÓ¦²»Í¬ä¯ÀÀÆ÷µÄ ......

ajax Ïê½â

ajax¾ÍÊÇjavascript ÒòΪÒÔǰjavascriptûÓÐhttpXMLrequest¶ÔÏ󣬴ÓIE5.0Ö®ºó³öÏÖ£¬Ëµ°×ÁËajax¾ÍÊÇ¿ÉÒÔÓÃjavascriptÏò·þÎñÆ÷·¢ËÍÇëÇ󣬲¢ÇÒÄܽÓÊÕ·þÎñ·µ»ØµÄÄÚÈÝ,дajax³ÌÐòֻҪд³öÒ»¸ö·¢Ëͺ¯ÊýºÍÒ»¸ö½ÓÊÕ·þÎñÔ±·µ»ØµÄº¯Êý¼´¿É£¬ÔÚ·þÎñÆ÷³ÌÐòÖпÉÒÔ·µ»Ø×Ö·û´®Ò²¿ÉÒÔ·µ»Øxml£¬ÊµÀý³ÌÐòhttp://xsuo.javaeye.com/blog/578637 ......

Google AJAX ÓïÑÔ API ·­Òë´úÂë

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <script type="text/javascript" src="http://www.google.com/jsapi"></script> ......
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