有关AJAX项目开始与像 jQuery的库。它可以处理大量的工作给你。

使用jQuery的步骤是这样的：

1. 使用 AJAX命令检索您的服务器的数据。

     $。阿贾克斯（{
     网址：'search.php中，
     数据：查询= SEARCH_TERMS
     成功：完成（数据））;  

2. 更​​新使用功能，像结果DIV：

    
   功能完成的（结果）{
       $（'＃search_results）的innerHTML（结果）。
   } 

I have a text field. When I type something into than text field, I want to load stuff into the DIV below. That's my code equivalent:

<input type="text" onkeyup="/* I am not sure how it's done, but I'll just write: */ document.getElementById('search_results').innerHTML = getContents('search.php?query='+this.value);" /><br/>
<div id="search_results"></div>

Hope you can help. Thanks in advance!

EDIT: I would appreciate it if the solution did not involve using jQuery - as long as it's possible.

ANSWER: How I'm doing it:

<input type="text" onkeyup="loadSearchResults(this.value)" /><br/>
<div id="search_results"></div>

<script>
function loadSearchResults(query){

if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari
    var xmlhttp=new XMLHttpRequest();
}else{// code for IE6, IE5
    var xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
    if (xmlhttp.readyState==4 && xmlhttp.status==200){
        document.getElementById("search_results").innerHTML=xmlhttp.responseText;
    }else if(xmlhttp.readyState>=1 && xmlhttp.status==200){
        // show the ajax loader or stuff like that...
    }
}
xmlhttp.open("GET","search.php?search="+query,true);
xmlhttp.send();

}
</script>

For AJAX projects start with a library like jQuery. It will handle a great deal of the work for you.

Using jQuery the steps would be something like:

1. Use the ajax command to retrieve the data from your server.

   $.ajax({
     url: 'search.php',
     data: "query=search_terms",
     success: finished(data));

2. update the div on result using a function like:

   
   function finished(result) {
       $('#search_results').innerHTML(result);
   }