AJAX中GET和POST方法的区别
2008-05-13 15:13
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<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Send Request Data Using GET and POST http://</title> <script type="text/javascript">
<!--
var oHttp;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
oHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
oHttp=new XMLHttpRequest();
}
}
function createQueryString()
{
var firstName=document.getElementById("firstName").value;
var middleName=document.getElementById("middleName").value;
var birthday=document.getElementById("birthday").value;
var QueryString="firstName="+firstName+"&middleName="+middleName+"&birthday="+birthday;
return QueryString
}
function doRequestUsingGET()
{
createXMLHttpRequest();
var queryString="Handler.ashx?";
queryString=queryString+createQueryString()+"&timeStamp="+new Date().getTime();
oHttp.onreadystatechange=handleStateChange;
oHttp.open("GET",queryString,true);
oHttp.send(null);
}
function doRequestUsingPOST()
{
createXMLHttpRequest();
var url="Handler.ashx?timeStamp="+new Date().getTime();
var queryString=createQueryString();
oHttp.onreadystatechange=handleStateChange;
oHttp.open("POST",url,true)
oHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");
oHttp.send(queryString);
}
function handleStateChange()
{
if(oHttp.readyState==4)
{
if(oHttp.status==200)
{
parseResults();
}
}
}
function parseResults()
{
var responseDiv=document.getElementById("serverResponse");
if(responseDiv.hasChildNodes())
{
responseDiv.removeChild(responseDiv.childNodes[0]);
}
var responseText=document.createTextNode(oHttp.responseText);
responseDiv.appendChild(responseText);
}
//-->
</script>
</head>
<body>
<h1>Enter your first name,middle name,and birthday:
</h1>
<table>
<tbody>
<tr>
<td>First name:</td>
<td><input id="firstName" type="text" /></td>
</tr>
<tr>
<td>Middle name:</td>
<td><input id="middleName" type="text" /></td>
</tr>
<tr>
<td>birthday:</td>
<td><input id="birthday" type="text" /></td>
</tr>
</tbody>
</table>
<form action="#">
<input type="button" value="Send parameters using GET" onclick="doRequestUsingGET();" />
<br />
<br />
<input type="button" value="Send parameters using POST" onclick="doRequestUsingPOST();" />
</form>
<br />
<h2>Server Response:</h2>
<div id="serverResponse"></div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Send Request Data Using GET and POST http://</title> <script type="text/javascript">
<!--
var oHttp;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
oHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
oHttp=new XMLHttpRequest();
}
}
function createQueryString()
{
var firstName=document.getElementById("firstName").value;
var middleName=document.getElementById("middleName").value;
var birthday=document.getElementById("birthday").value;
var QueryString="firstName="+firstName+"&middleName="+middleName+"&birthday="+birthday;
return QueryString
}
function doRequestUsingGET()
{
createXMLHttpRequest();
var queryString="Handler.ashx?";
queryString=queryString+createQueryString()+"&timeStamp="+new Date().getTime();
oHttp.onreadystatechange=handleStateChange;
oHttp.open("GET",queryString,true);
oHttp.send(null);
}
function doRequestUsingPOST()
{
createXMLHttpRequest();
var url="Handler.ashx?timeStamp="+new Date().getTime();
var queryString=createQueryString();
oHttp.onreadystatechange=handleStateChange;
oHttp.open("POST",url,true)
oHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");
oHttp.send(queryString);
}
function handleStateChange()
{
if(oHttp.readyState==4)
{
if(oHttp.status==200)
{
parseResults();
}
}
}
function parseResults()
{
var responseDiv=document.getElementById("serverResponse");
if(responseDiv.hasChildNodes())
{
responseDiv.removeChild(responseDiv.childNodes[0]);
}
var responseText=document.createTextNode(oHttp.responseText);
responseDiv.appendChild(responseText);
}
//-->
</script>
</head>
<body>
<h1>Enter your first name,middle name,and birthday:
</h1>
<table>
<tbody>
<tr>
<td>First name:</td>
<td><input id="firstName" type="text" /></td>
</tr>
<tr>
<td>Middle name:</td>
<td><input id="middleName" type="text" /></td>
</tr>
<tr>
<td>birthday:</td>
<td><input id="birthday" type="text" /></td>
</tr>
</tbody>
</table>
<form action="#">
<input type="button" value="Send parameters using GET" onclick="doRequestUsingGET();" />
<br />
<br />
<input type="button" value="Send parameters using POST" onclick="doRequestUsingPOST();" />
</form>
<br />
<h2>Server Response:</h2>
<div id="serverResponse"></div>
</body>
</html>
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