Ajax實現無重新整理表單提交
阿新 • • 發佈:2019-01-27
- 一般方式實現
<!DOCTYPE html>
<html>
<head>
<meta charset = "utf-8">
<title></title>
<script language = "javascript">
function f1(){
//建立xmlHttp物件
var xmlHttp;
if(window.ActiveXObject){
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest){
xmlHttp = new XMLHttpRequest();
}
//獲取表單值
var username = document.form1.username.value;
var password = document.form1.password.value;
var email = document.form1.email.value;
var datastr = "username=" + username + "&password=" + password + "&email=" + email;
var url = "./004.php";
xmlHttp.onreadystatechange = function(){
if(xmlHttp.readyState == 4){
alert(xmlHttp.responseText);
}
}
//提交資料
xmlHttp.open("POST",url,false);
xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlHttp.send(datastr);
document.getElementById("p1").innerHTML = "表單已提交";
}
</script>
</head>
<body>
<h2>Ajax無重新整理提交表單</h2>
<p id="p1"></p>
<form name="form1">
<p>使用者名稱:<input type = "text" name = "username" /></p>
<p>密碼:<input type = "password" name = "password" /></p>
<p>郵箱:<input type = "text" name = "email" /></p>
<p><input type = "button" value = "提交" name = "Submit" onclick = "f1()"/></p>
</form>
</body>
</html>
服務端頁面 004.php
//004.php
<?php
//收集form表單傳遞過來的post資訊
print_r($_POST);
執行效果
2.利用FormData表單資料物件,可以實現快速收集表單資訊。FormData是html5的新技術,在主流瀏覽器中都可以正常使用。
<!DOCTYPE html>
<html>
<head>
<meta charset = "utf-8">
<title></title>
<script language = "javascript">
function f1(){
//建立xmlHttp物件
var xmlHttp;
if(window.ActiveXObject){
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest){
xmlHttp = new XMLHttpRequest();
}
//獲取表單值
//利用FormData表單資料物件,快速收集表單資訊
var form = document.form1;
var fd = new FormData(form);//收集fm的表單資訊
//提交資料
xmlHttp.open("POST","./004.php",false);
xmlHttp.send(fd);
}
</script>
</head>
<body>
<h2>Ajax無重新整理提交表單</h2>
<form name="form1">
<p>使用者名稱:<input type = "text" name = "username" /></p>
<p>密碼:<input type = "password" name = "password" /></p>
<p>郵箱:<input type = "text" name = "email" /></p>
<p><input type = "button" value = "提交" name = "Submit" onclick = "f1()"/></p>
</form>
</body>
</html>
注意:
(1)FormData要求每個表單域必須有name屬性;
(2)使用FormData的同時不能設定setRequestHeader()方法;
(3)普通表單域的特殊符號無需編碼