带有PHP的jQuery Ajax POST示例
我正在尝试将数据从表单发送到数据库。这是我使用的表格:
<form name="foo" action="form.php" method="POST" id="foo"> <label for="bar">A bar</label>
<input id="bar" name="bar" type="text" value="" />
<input type="submit" value="Send" />
</form>
典型的方法是提交表单,但这会导致浏览器重定向。使用jQuery和Ajax,是否可以捕获表单的所有数据并将其提交给PHP脚本(例如
form.php )?
回答:
的基本用法.ajax
如下所示:
<form id="foo"> <label for="bar">A bar</label>
<input id="bar" name="bar" type="text" value="" />
<input type="submit" value="Send" />
</form>
// Variable to hold requestvar request;
// Bind to the submit event of our form
$("#foo").submit(function(event){
// Prevent default posting of form - put here to work in case of errors
event.preventDefault();
// Abort any pending request
if (request) {
request.abort();
}
// setup some local variables
var $form = $(this);
// Let's select and cache all the fields
var $inputs = $form.find("input, select, button, textarea");
// Serialize the data in the form
var serializedData = $form.serialize();
// Let's disable the inputs for the duration of the Ajax request.
// Note: we disable elements AFTER the form data has been serialized.
// Disabled form elements will not be serialized.
$inputs.prop("disabled", true);
// Fire off the request to /form.php
request = $.ajax({
url: "/form.php",
type: "post",
data: serializedData
});
// Callback handler that will be called on success
request.done(function (response, textStatus, jqXHR){
// Log a message to the console
console.log("Hooray, it worked!");
});
// Callback handler that will be called on failure
request.fail(function (jqXHR, textStatus, errorThrown){
// Log the error to the console
console.error(
"The following error occurred: "+
textStatus, errorThrown
);
});
// Callback handler that will be called regardless
// if the request failed or succeeded
request.always(function () {
// Reenable the inputs
$inputs.prop("disabled", false);
});
});
注:由于jQuery的1.8.success()
,.error()
并.complete()
支持已被弃用.done()
,.fail()
并且.always()
。
注意:请记住,上面的代码段必须在DOM准备就绪后完成,因此您应该将其放在$(document).ready()
处理程序中(或使用$()
简写形式)。
提示:您可以 像这样链接回调处理程序:$.ajax().done().fail().always();
// You can access the values posted by jQuery.ajax// through the global variable $_POST, like this:
$bar = isset($_POST['bar']) ? $_POST['bar'] : null;
注意:始终 清理发布的数据,以防止注入和其他恶意代码。
你也可以使用速记.post
代替.ajax
在上面的JavaScript代码:
$.post('/form.php', serializedData, function(response) { // Log the response to the console
console.log("Response: "+response);
});
注意:上面的JavaScript代码适用于jQuery 1.8及更高版本,但它应适用于jQuery 1.5之前的版本。
以上是 带有PHP的jQuery Ajax POST示例 的全部内容, 来源链接: utcz.com/qa/408529.html