本文實例分析了AJAX使用get與post模式的區別。。具體分析如下：
如果是get 模式的請求，則將傳遞參數通過URL 地址發送到服務器端；
如果是post 模式的請求，則將傳遞參數通過send( ) 方法發送到服務器端（并且必須設置請求文件頭）；
post 模式的代碼如下：
<script type="text/javascript"><!--var queryString = "firstName=xugang&birthday=1227";var url = "9-3.aspx?timetamp=" + new Date().getTime();xmlHttp.open("POST",url);xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");xmlHttp.send(queryString); //該語句負責發送數據//--></script>一個演示get 模式與post 模式區別的示例：
客戶端：
代碼示例：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>GET VS. POST</title><script language="javascript">var xmlHttp;function createXMLHttpRequest(){ if(window.ActiveXObject) xmlHttp = new ActiveXObject("Microsoft.XMLHttp"); else if(window.XMLHttpRequest) xmlHttp = new XMLHttpRequest();}function createQueryString(){ var firstName = document.getElementById("firstName").value; var birthday = document.getElementById("birthday").value; var queryString = "firstName=" + firstName + "&birthday=" + birthday; return encodeURI(encodeURI(queryString)); //兩次編碼解決中文亂碼問題}// GET 模式function doRequestUsingGET(){ createXMLHttpRequest(); var queryString = "9-3.aspx?"; queryString += createQueryString() + "×tamp=" + new Date().getTime(); xmlHttp.onreadystatechange = handleStateChange; xmlHttp.open("GET",queryString); xmlHttp.send(null);}// POST 模式function doRequestUsingPOST(){ createXMLHttpRequest(); var url = "9-3.aspx?timestamp=" + new Date().getTime(); var queryString = createQueryString(); xmlHttp.open("POST",url); xmlHttp.onreadystatechange = handleStateChange; xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); xmlHttp.send(queryString);}function handleStateChange(){ if(xmlHttp.readyState == 4 && xmlHttp.status == 200){ var responseDiv = document.getElementById("serverResponse"); responseDiv.innerHTML = decodeURI(xmlHttp.responseText);//解碼 }}</script></head><body><h2>輸入姓名和生日</h2><form> <input type="text" id="firstName" /><br> <input type="text" id="birthday" /></form><form> <input type="button" value="GET" onclick="doRequestUsingGET();" /><br> <input type="button" value="POST" onclick="doRequestUsingPOST();" /></form><div id="serverResponse"></div></body></html>服務器端
代碼示例：
代碼如下:<%@ Page Language="C#" ContentType="text/html" ResponseEncoding="gb2312" %>
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