如何使用Ajax提交表单？

Question

我完全不知道如何使用Ajax提交表单......我对Javascript还是很陌生。当我单击表单上的“提交”时，页面上没有发生任何变化，而不会在应存储信息的SQL数据库中（也经过了双重检查的流程表单）。

以下是代码：

Javascript:

$(document).ready(function() {
    $('#form').submit(function() {
        $.ajax({
            url: "../process.php",
            type: "post",
            data: $(this).serialize()
        });
    });
});

HTML:

<form name="contact" method="post" action="" id="form">

    <span id="input">
        <input  type="text" name="first" maxlength="50" size="30" title="First Name" class="textbox">
        <input  type="text" name="last" maxlength="80" size="30" title="Last Name" class="textbox">
        <input  type="text" name="email" maxlength="80" size="30" title="Email" class="textbox">
        <textarea  name="request" maxlength="1000" cols="25" rows="6" title="Request"></textarea>
    </span>

    <input type="submit" value="Submit" class="submit">   

</form>

Answer 1

$('#form').submit(function(e) {
    e.preventDefault(); //prevents the page from refreshing
    var $this = $(this); // cache $(this) for later use
    $.ajax({
        url: "../process.php",
        type: "post",
        data: $this.serialize()
    });
}); 

Also could be to do with the dataType property. Or various other things.