應用AJAX建立搜尋引擎前端介面

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上載者:User
ajax|建立|搜尋引擎

看到這篇《應用AJAX建立搜尋引擎前端介面》,原文大家可以讀一讀,下面是例子,這種模式MSN和GOOGLE都提供類似模式的介面了,比我提供的代碼要絢麗的多,可是都是基於無重新整理的,我覺得很適合小站裡的搜尋,便捷而且不用在乎SEO,能得到較好的體驗。
<!--
The Code From:http://www.devarticles.com/c/a/JavaScript/Creating-the-Front-End-of-a-Search-Engine-with-AJAX/4/
Title:Creating the Front End of a Search Engine with AJAX
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN""http://
www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-1" />
<title>AJAX-BASED SEARCH ENGINE</title>
<script language="javascript">
<!--
// send http requests
function sendHttpRequest(url,callbackFunc,respXml){
  var xmlobj=null;
  try{
    xmlobj=new XMLHttpRequest();
    }
  catch(e){
    try{
      xmlobj=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch(e){
      alert('AJAX is not supported by your browser!');
      return false;
    }
  }
  xmlobj.onreadystatechange=function(){
    if(xmlobj.readyState==4){
      if(xmlobj.status==200){
        respXml?eval(callbackFunc+'(xmlobj.responseXML)'):eval(callbackFunc+'(xmlobj.responseText)');
      }
    }
  }
// open socket connection
  xmlobj.open('GET',url,true);
// send http header
 xmlobj.setRequestHeader('Content-Type','text/html;charset=UTF-8');
// send http request
  xmlobj.send(null);
}
// display search results
function displayResults(results){
 var rescontainer=document.getElementById('resultcontainer');
 if(!rescontainer){return};
    rescontainer.innerHTML='';
    rescontainer.innerHTML=results;
  }

window.onload=function(){
  if(document.getElementById&&document.getElementsByTagName&&document.createElement){
 var searchbutton=document.getElementsByTagName('form')[0].elements[1];
     if(searchbutton){
      searchbutton.onclick=function(){
      sendHttpRequest('http://www.google.cn/search?hl=zh-CN&q='+document.      getElementsByTagName('form')[0].elements[0].value,'displayResults');
      }
    }
 }
}
-->
</script>
<style type="text/css">
<!--
body{
 margin:0;
 padding:0;
 background:#fff;
      text-align:center;
}
body div {text-align:left;}
h1{
 font:bold 28px Arial, Helvetica, sans-serif;
 color:#000;
 text-align:center;
}
h2{
 font:bold 12px Arial, Helvetica, sans-serif;
 color:#c00;
}
p{
 font:normal 12px Arial, Helvetica, sans-serif;
 color:#000;
}
#searchcontainer{
 width:600px;
 padding:10px 0 10px 0;
 margin-left:auto;
 margin-right:auto;
 background:#eee;
 border:1px solid #ccc;
 text-align:center;
}
#resultcontainer{
 width:600px;
 height:500px;
 padding:10px;
 margin-left:auto;
 margin-right:auto;
 overflow:auto;
 background:#fafafa;
 border-left:1px solid #ccc;
 border-right:1px solid #ccc;
 border-bottom:1px solid #ccc;
}
#resultcontainer ul,li{
 display:block;
 list-style:none;
}
#resultcontainer a,#resultcontainer a:visited{
 font:bold 12px Arial, Helvetica, sans-serif;
 text-decoration:underline;
 color:#039;
}
#resultcontainer a:hover,#resultcontainer
a:active,#resultcontainer a:focus{
 color: #c00;
}
.searchbox{
 width:200px;
 font:normal 12px Arial, Helvetica, sans-serif;
 color:#000;
}
.searchbutton{
 width:80px;
 font:bold 12px Arial, Helvetica, sans-serif;
 color:#000;
}
-->
</style>
</head>
<body>
<h1>AJAX-BASED SEARCH ENGINE</h1>
<div id="searchcontainer">
  <form method="get">
    <input type="text" name="searchterm" title="Enter your search term here" class="searchbox" />
    <input type="button" name="search" value="Search" class="searchbutton" title="Search Now!" />
  </form>
</div>
<div id="resultcontainer">
</div>
</body>
</html>



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