jQuery Validate 插件 - 自定义方法和消息显示

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery Validate 插件 - 自定义方法和消息显示</title>

<link rel="stylesheet" media="screen" href="http://t.runoops.com/js/lib/jqueryvalidation-1.19.5/demo/css/screen.css" />
<script src="http://t.runoops.com/js/lib/jquery.js"></script>
<script src="http://t.runoops.com/js/lib/jqueryvalidation-1.19.5/jquery.validate.min.js"></script>
<script src="http://t.runoops.com/js/lib/jqueryvalidation-1.19.5/localization/messages_zh.js"></script>

<script type="text/javascript">
  // 扩展当前规则为一个新规则
  
  // 新规则要求输入文本 "buga"，我们也可以定义一个默认的消息
  $.validator.addMethod("buga", function(value) {
    return value == "buga";
  }, '请输入 "buga"！');
  
  // 新规则要求值必须与第一个参数相同
  $.validator.methods.equal = function(value, element, param) {
    return value == param;
  };
  
  $().ready(function() {
    var validator = $("#texttests").bind("invalid-form.validate", function() {
      $("#summary").html("您的表单包含 " + validator.numberOfInvalids() + " 错误，请查看下面的细节。");
    }).validate({
      debug: true,
      errorElement: "em",
      errorContainer: $("#warning, #summary"),
      errorPlacement: function(error, element) {
        error.appendTo( element.parent("td").next("td") );
      },
      success: function(label) {
        label.text("ok!").addClass("success");
      },
      rules: {
        number: {
          required:true,
          minlength:3,
          maxlength:15,
          number:true 
        },
        secret: "buga",
        math: {
          equal: 11 
        }
      }
    });
    
  });
</script>

<style type="text/css">
form.cmxform { width: 50em; }
em.error {
  background:url("/try/jquery/plugins/images/unchecked.gif") no-repeat 0px 0px;
  padding-left: 16px;
}
em.success {
  background:url("/try/jquery/plugins/images/checked.gif") no-repeat 0px 0px;
  padding-left: 16px;
}

form.cmxform label.error {
  margin-left: auto;
  width: 250px;
}
em.error { color: black; }
#warning { display: none; }
</style>

</head>
<body>

<div id="main">

<form class="cmxform" id="texttests" method="get" action="foo.html">
  <h2 id="summary"></h2>

<fieldset>
    <legend>自定义方法和错误消息显示</legend>
    <table>
      <tr>
        <td><label for="number">文本框</label></td>
        <td><input id="number" name="number"
          title="请输入至少 3 个但不超过 15 个字符！" />
        </td>
        <td></td>
      </tr>
      <tr>
        <td><label for="secret">密钥</label></td>
        <td><input name="secret" id="secret" /></td>
        <td></td>
      </tr>
      <tr>
        <td><label for="math">7 + 4 = </label></td>
        <td><input id="math" name="math" title="请输入正确的结果！" /></td>
        <td></td>
      </tr>
    </table>
    <input class="submit" type="submit" value="提交"/>
  </fieldset>
</form>

<h3 id="warning">您的表单包含大量的错误！请重新输入。</h3>

</div>

</body>
</html>