1.首先要扩展validatebox，添加验证两次密码功能
$.extend($.fn.validatebox.defaults.rules, { eqPassword:{ validator:function(value, param) { return value == $(param[0]).val(); }, message : '密码不一致！' } });
2.在HTML中要引入eqPassword函数
<form id="modifyPwdForm" method="post">
<input name="ids" type="hidden" />
<table class="tableForm">
<tr>
<th>新密码:</th>
<td><input name="cpwd" type="password" class="easyui-validatebox" required="true" missingMessage="请填写新密码" /></td>
</tr>
<tr>
<th>确认密码:</th>
<td><input name="recpwd" type="password" class="easyui-validatebox" required="true" missingMessage="请再次填写新密码" validType="eqPassword['#modifyPwdForm input[name=cpwd]']" /></td>
</tr>
</table>
</form>
源码：
<!DOCTYPE html>
<html>
<head>
<title>password.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../easyui/jquery.min.js"></script>
<script type="text/javascript" src="../easyui/jquery.easyui.min.js"></script>
<script type="text/javascript" src="../easyui/locale/easyui-lang-zh_CN.js"></script>
<link rel="stylesheet" href="../easyui/themes/default/easyui.css" type="text/css"></link>
<link rel="stylesheet" href="../easyui/themes/icon.css" type="text/css"></link>
<script>
$.extend($.fn.validatebox.defaults.rules, {
eqPassword:{
validator:function(value, param) {
return value == $(param[0]).val();
},
message : '密码不一致！'
}
});
</script>
</head>
<body>
<form id="modifyPwdForm" method="post">
<input name="ids" type="hidden" />
<table class="tableForm">
<tr>
<th>新密码:</th>
<td><input name="cpwd" type="password" class="easyui-validatebox" required="true" missingMessage="请填写新密码" /></td>
</tr>
<tr>
<th>确认密码:</th>
<td><input name="recpwd" type="password" class="easyui-validatebox" required="true" missingMessage="请再次填写新密码" validType="eqPassword['#modifyPwdForm input[name=cpwd]']" /></td>
</tr>
</table>
</form>
</body>
</html>