jquery validate ajax 如何使用 _Ajax

jquery validate ajax 怎么使用

Javascript代码??

remote:?{ ??
??url:?"ajax/validateUserName.action",?????//后台处理程序 ??
??type:?"post",???????????????//数据发送方式 ??
??dataType:?"json",???????????//接受数据格式??? ??
??data:?{?????????????????????//要传递的数据，默认已传递应用此规则的表单项 ??
??????email:?function()?{ ??
??????????return?$("#email").val(); ??
??????} ??
??}??

  remote: {
    url: "ajax/validateUserName.action",     //后台处理程序
    type: "post",               //数据发送方式
    dataType: "json",           //接受数据格式   
    data: {                     //要传递的数据，默认已传递应用此规则的表单项
        email: function() {
            return $("#email").val();
        }
    }

注意：remote是远程验证：比如注册验证用户名是否已被注册，返回值只能是true（验证成功）或false（验证失败）。

除了内置的验证规则，validation还允许自定义验证规则。这是通过validation的addMethod方法实现的，语法为：jQuery.validator.addMethod("name",function,message)。其中name为验证规则的名称，function定义验证的规则，message是验证失败时的提示信息。

jqueryvalide例子：

$.validator.setDefaults({
?submitHandler: function() { alert("submitted!"); }
});

$().ready(function() {
?// validate the comment form when it is submitted
?$("#commentForm").validate();
?
?// validate signup form on keyup and submit
?$("#signupForm").validate({
??rules: {
???firstname: "required",
???lastname: "required",
???username: {
????required: true,
????minlength: 2
???},
???password: {
????required: true,
????minlength: 5
???},
???confirm_password: {
????required: true,
????minlength: 5,
????equalTo: "#password"
???},
???email: {
????required: true,
????email: true
???},
???topic: {
????required: "#newsletter:checked",
????minlength: 2
???},
???agree: "required"
??},
??messages: {
???firstname: "Please enter your firstname",
???lastname: "Please enter your lastname",
???username: {
????required: "Please enter a username",
????minlength: "Your username must consist of at least 2 characters"
???},
???password: {
????required: "Please provide a password",
????minlength: "Your password must be at least 5 characters long"
???},
???confirm_password: {
????required: "Please provide a password",
????minlength: "Your password must be at least 5 characters long",
????equalTo: "Please enter the same password as above"
???},
???email: "Please enter a valid email address",
???agree: "Please accept our policy"
??}
?});
?
?// propose username by combining first- and lastname
?$("#username").focus(function() {
??var firstname = $("#firstname").val();
??var lastname = $("#lastname").val();
??if(firstname && lastname && !this.value) {
???this.value = firstname + "." + lastname;
??}
?});
?
?//code to hide topic selection, disable for demo
?var newsletter = $("#newsletter");
?// newsletter topics are optional, hide at first
?var inital = newsletter.is(":checked");
?var topics = $("#newsletter_topics")[inital ? "removeClass" : "addClass"]("gray");
?var topicInputs = topics.find("input").attr("disabled", !inital);
?// show when newsletter is checked
?newsletter.click(function() {
??topics[this.checked ? "removeClass" : "addClass"]("gray");
??topicInputs.attr("disabled", !this.checked);
?});
});
</script>

</head>
<body>

<h1 id="banner"><a href="http://bassistance.de/jquery-plugins/jquery-plugin-validation/">jQuery Validation Plugin</a> Demo</h1>
<div id="main">

<p>Default submitHandler is set to display an alert into of submitting the form</p>

<form class="cmxform" id="commentForm" method="get" action="">
?<fieldset>
??<legend>Please provide your name, email address (won't be published) and a comment</legend>
??<p>
???<label for="cname">Name (required, at least 2 characters)</label>
???<input id="cname" name="name" class="required" minlength="2" />
??<p>
???<label for="cemail">E-Mail (required)</label>
???<input id="cemail" name="email" class="required email" />
??</p>
??<p>
???<label for="curl">URL (optional)</label>
???<input id="curl" name="url" class="url" value="" />
??</p>
??<p>
???<label for="ccomment">Your comment (required)</label>
???<textarea id="ccomment" name="comment" class="required"></textarea>
??</p>
??<p>
???<input class="submit" type="submit" value="Submit"/>
??</p>
?</fieldset>
</form>

<form class="cmxform" id="signupForm" method="get" action="">
?<fieldset>
??<legend>Validating a complete form</legend>
??<p>
???<label for="firstname">Firstname</label>
???<input id="firstname" name="firstname" />
??</p>
??<p>
???<label for="lastname">Lastname</label>
???<input id="lastname" name="lastname" />
??</p>
??<p>
???<label for="username">Username</label>
???<input id="username" name="username" />
??</p>
??<p>
???<label for="password">Password</label>
???<input id="password" name="password" type="password" />
??</p>
??<p>
???<label for="confirm_password">Confirm password</label>
???<input id="confirm_password" name="confirm_password" type="password" />
??</p>
??<p>
???<label for="email">Email</label>
???<input id="email" name="email" />
??</p>
??<p>
???<label for="agree">Please agree to our policy</label>
???<input type="checkbox" class="checkbox" id="agree" name="agree" />
??</p>
??<p>
???<label for="newsletter">I'd like to receive the newsletter</label>
???<input type="checkbox" class="checkbox" id="newsletter" name="newsletter" />
??</p>
??<fieldset id="newsletter_topics">
???<legend>Topics (select at least two) - note: would be hidden when newsletter isn't selected, but is visible here for the demo</legend>
???<label for="topic_marketflash">
????<input type="checkbox" id="topic_marketflash" value="marketflash" name="topic" />
????Marketflash
???</label>
???<label for="topic_fuzz">
????<input type="checkbox" id="topic_fuzz" value="fuzz" name="topic" />
????Latest fuzz
???</label>
???<label for="topic_digester">
????<input type="checkbox" id="topic_digester" value="digester" name="topic" />
????Mailing list digester
???</label>
???<label for="topic" class="error">Please select at least two topics you'd like to receive.</label>
??</fieldset>
??<p>
???<input class="submit" type="submit" value="Submit"/>
??</p>
?</fieldset>
</form>

<h3>Syntetic examples</h3>
<ul>
?<li><a href="errorcontainer-demo.html">Error message containers in action</a></li>
?<li><a href="custom-messages-metadata-demo.html">Custom Messages as Metadata</a></li>
?<li><a href="radio-checkbox-select-demo.html">Radio and checkbox buttons and selects</a></li>
?<li><a href="ajaxSubmit-intergration-demo.html">Integration with Form Plugin (AJAX submit)</a></li>
?<li><a href="custom-methods-demo.html">Custom methods and message display.</a></li>
?<li><a href="dynamic-totals.html">Dynamic forms</a></li>
?<li><a href="themerollered.html">Forms styled with jQuery UI Themeroller</a></li>
</ul>
<h3>Real-world examples</h3>
<ul>
?<li><a href="milk/">Remember The Milk signup form</a></li>
?<li><a href="marketo/">Marketo signup form</a></li>
?<li><a href="multipart/">Buy and Sell a House multipart form</a></li>
?<li><a href="captcha/">Remote captcha validation</a></li>
</ul>

<h3>Testsuite</h3>
<ul>
?<li><a href="../test/">Validation Testsuite</a></li>
</ul>?