Ajax 進行Post傳值和Get傳值

韻朵之家 2009-04-11

展開全文

來自：http://www.cnblogs.com/fuchifeng/archive/2008/11/25/1340913.html

以下AJAX post 傳值

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<script language="javascript">
function saveUserInfo()
{
//獲取接受返回信息層
var msg = document.getElementById("msg");

//獲取表單對象和用戶信息值
var f = document.user_info;
var userName = f.user_name.value;
var userAge   = f.user_age.value;
var userSex   = f.user_sex.value;

//接收表單的URL地址
var url = "/ajax_output.php";

//需要POST的值，把每個變量都通過&來聯(lián)接
var postStr   = "user_name="+ userName +"&user_age="+ userAge +"&user_sex="+ userSex;

//實例化Ajax
//var ajax = InitAjax();

           var ajax = false;
         //開始初始化XMLHttpRequest對象
         if(window.XMLHttpRequest) { //Mozilla 瀏覽器
                 ajax = new XMLHttpRequest();
                 if (ajax.overrideMimeType) {//設置MiME類別
                         ajax.overrideMimeType("text/xml");
                 }
         }
         else if (window.ActiveXObject) { // IE瀏覽器
                 try {
                         ajax = new ActiveXObject("Msxml2.XMLHTTP");
                 } catch (e) {
                         try {
                                 ajax = new ActiveXObject("Microsoft.XMLHTTP");
                         } catch (e) {}
                 }
         }
         if (!ajax) { // 異常，創(chuàng)建對象實例失敗
                 window.alert("不能創(chuàng)建XMLHttpRequest對象實例.");
                 return false;
         }




//通過Post方式打開連接
ajax.open("POST", url, true);

//定義傳輸?shù)奈募﨟TTP頭信息
ajax.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

//發(fā)送POST數(shù)據(jù)
ajax.send(postStr);

//獲取執(zhí)行狀態(tài)
ajax.onreadystatechange = function() {
   //如果執(zhí)行狀態(tài)成功，那么就把返回信息寫到指定的層里
   if (ajax.readyState == 4 && ajax.status == 200) {
     msg.innerHTML = ajax.responseText;
   }
}
}
</script>
<body >
<div id="msg"></div>
<form name="user_info" method="post" action="">
姓名：<input type="text" name="user_name" /><br />
年齡：<input type="text" name="user_age" /><br />
性別：<input type="text" name="user_sex" /><br />

<input type="button" value="提交表單" onClick="saveUserInfo()">
</form>

</body>

以下是AJAX get傳值

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<script language="javascript">
function saveUserInfo()
{
//獲取接受返回信息層
var msg = document.getElementById("msg");

//獲取表單對象和用戶信息值
var f = document.user_info;
var userName = f.user_name.value;
var userAge   = f.user_age.value;
var userSex   = f.user_sex.value;

//接收表單的URL地址
var url = "/ajax_output.php? user_name="+ userName +"&user_age="+ userAge +"&user_sex="+ userSex";

//實例化Ajax
//var ajax = InitAjax();

           var ajax = false;
         //開始初始化XMLHttpRequest對象
         if(window.XMLHttpRequest) { //Mozilla 瀏覽器
                 ajax = new XMLHttpRequest();
                 if (ajax.overrideMimeType) {//設置MiME類別
                         ajax.overrideMimeType("text/xml");
                 }
         }
         else if (window.ActiveXObject) { // IE瀏覽器
                 try {
                         ajax = new ActiveXObject("Msxml2.XMLHTTP");
                 } catch (e) {
                         try {
                                 ajax = new ActiveXObject("Microsoft.XMLHTTP");
                         } catch (e) {}
                 }
         }
         if (!ajax) { // 異常，創(chuàng)建對象實例失敗
                 window.alert("不能創(chuàng)建XMLHttpRequest對象實例.");
                 return false;
         }




//通過Post方式打開連接
ajax.open("GET", url, true);

//發(fā)送GET數(shù)據(jù),已經(jīng)在URL中賦了值所以send那里只要加個空參.
ajax.send(null);

//獲取執(zhí)行狀態(tài)
ajax.onreadystatechange = function() {
   //如果執(zhí)行狀態(tài)成功，那么就把返回信息寫到指定的層里
   if (ajax.readyState == 4 && ajax.status == 200) {
     msg.innerHTML = ajax.responseText;
   }
}
}
</script>
<body >
<div id="msg"></div>
<form name="user_info" method="post" action="">
姓名：<input type="text" name="user_name" /><br />
年齡：<input type="text" name="user_age" /><br />
性別：<input type="text" name="user_sex" /><br />

<input type="button" value="提交表單" onClick="saveUserInfo()">
</form>

</body>