Jquery的实现post方式的异步请求
jQuery.post( url, [data], [callback], [type] ) :
使用POST方式来进行异步请求
参数:
url (String) : 发送请求的URL地址.
data (Map) : (可选) 要发送给服务器的数据,以 Key/value 的键值对形式表示。
callback (Function) : (可选) 载入成功时回调函数(只有当Response的返回状态是success才是调用该方法)。
type (String) : (可选)官方的说明是:Type of data to be sent。其实应该为客户端请求的类型(JSON,XML,等等)
url (String) : 发送请求的URL地址.
data (Map) : (可选) 要发送给服务器的数据,以 Key/value 的键值对形式表示。
callback (Function) : (可选) 载入成功时回调函数(只有当Response的返回状态是success才是调用该方法)。
type (String) : (可选)官方的说明是:Type of data to be sent。其实应该为客户端请求的类型(JSON,XML,等等)
示例:
<!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>Untitled Document</title>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script language="javascript">
function checkemail(){
if($('#email').val() == ""){
$('#msg').html("please enter the email!");
$('#email').focus;
return false;
}
if($('#address').val() == ""){
$('#msg').html("please enter the address!");
$('#address').focus;
return false;
}
ajax_post();
}
function ajax_post(){
$.post("action.php",{email:$('#email').val(),address:$('#address').val()},
function(data){
//$('#msg').html("please enter the email!");
//alert(data);
$('#msg').html(data);
},
"text");//这里返回的类型有:json,html,xml,text
}
</script>
</head>
<body>
<form id="ajaxform" name="ajaxform" method="post" action="action.php">
<p>
email<input type="text" name="email" id="email"/>
</p>
<p>
address<input type="text" name="address" id="address"/>
</p>
<p id="msg"></p>
<p>
<input name="Submit" type="button" value="submit" onclick="return checkemail()"/>
</p>
</form>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Untitled Document</title>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script language="javascript">
function checkemail(){
if($('#email').val() == ""){
$('#msg').html("please enter the email!");
$('#email').focus;
return false;
}
if($('#address').val() == ""){
$('#msg').html("please enter the address!");
$('#address').focus;
return false;
}
ajax_post();
}
function ajax_post(){
$.post("action.php",{email:$('#email').val(),address:$('#address').val()},
function(data){
//$('#msg').html("please enter the email!");
//alert(data);
$('#msg').html(data);
},
"text");//这里返回的类型有:json,html,xml,text
}
</script>
</head>
<body>
<form id="ajaxform" name="ajaxform" method="post" action="action.php">
<p>
email<input type="text" name="email" id="email"/>
</p>
<p>
address<input type="text" name="address" id="address"/>
</p>
<p id="msg"></p>
<p>
<input name="Submit" type="button" value="submit" onclick="return checkemail()"/>
</p>
</form>
</body>
</html>
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