如何发送一个XMLHttpRequest的检索数据时,用户点击一个按钮。
<script type="text/javascript">
var xmlhttp;
function loadXMLDoc(url)
{
xmlhttp=null;
if (window.XMLHttpRequest)
{// code for IE7, Firefox, Opera, etc.
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp!=null)
{
xmlhttp.onreadystatechange=state_Change;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}
else
{
alert("Your browser does not support XMLHTTP.");
}
}
function state_Change()
{
if (xmlhttp.readyState==4)
{// 4 = "loaded"
if (xmlhttp.status==200)
{// 200 = "OK"
document.getElementById("A1").innerHTML=xmlhttp.status;
document.getElementById("A2").innerHTML=xmlhttp.statusText;
document.getElementById("A3").innerHTML=xmlhttp.responseText;
}
else
{
alert("Problem retrieving XML data:" + xmlhttp.statusText);
}
}
}
</script>
Using the HttpRequest Object
Status:
Status text:
Response:
得到结果.
Using the HttpRequest Object
Status: 200
Status text: OK
Response:
Tove
ajax教程视频|ajax教程 如何发送一个XMLHttpRequest
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