jQuery 유효성 검사 플러그인은 강력한 양식 유효성 검사 function_jquery를 구현합니다.

<form action="" id="jvForm"> 
 姓名:<input type="text" name="username" id="username" class="required" /></br> 
 密码:<input type="password" name="password" id="password" class="required"/></br> 
 <input type="submit" value="提交" /> 
</form> 

<script type="text/javascript"> 
 $(function() { 
  $("#jvForm").validate(); 
 }) 
</script> 

<form action="" id="jvForm"> 
 姓名:<input type="text" name="username" id="username" /></br> 
 密码:<input type="password" name="password" id="password" /></br> 
 <input type="submit" value="提交" /> 
</form> 

$(function() { 
 $("#jvForm").validate({ 
  rules: { 
   username: { 
    required: true 
   }, 
   password: { 
    required: true 
   } 
  }, 
  messages: { 
   username: { 
    required: "姓名不能为空!" 
   }, 
   password: { 
    required: "密码不能为空!" 
   } 
  } 
 }); 
}) 

<form action="" id="jvForm"> 
  用 户 名:<input type="text" name="username"/></br> 
  密 码:<input type="password" name="password" id="password"/></br> 
  确认密码:<input type="password" name="confirm_password"/></br> 
  出 生 地:<select name="address"><option value="">--</option><option value="1">北京</option> 
 <option value="1">上海</option><option value="1">深圳</option></select></br> 
  手 机:<input type="text" name="mobile" /></br> 
  邮 箱:<input type="text" name="email" /></br> 
  <input type="submit" value="提交" /> 
</form> 

<style type="text/css"> 
 label.error{font-size:12px;font-weight: normal;color:#ff0511;margin-left:10px;} 
</style> 

<script type = "text/javascript"> 
$(function() { 
 $("#jvForm").validate({ 
  rules: { 
   username: { //用户名必填 至少3位 
    required: true, 
    minlength: 3 
   }, 
   password: { //密码必填 至少6位 
    required: true, 
    minlength: 6 
   }, 
   confirm_password: { //密码确认 
    required: true, 
    equalTo: "#password" 
   }, 
   address: { //出生地必填 
    required: true 
   }, 
   mobile: { //手机必填 验证格式 
    required: true, 
    mobile: true 
   }, 
   email: { //email必填 验证格式 
    required: true, 
    email: true 
   }, 
 
  }, 
  messages: { 
   username: { 
    required: "用户名不能为空!", 
    minlength: "用户名至少三位!" 
   }, 
   password: { 
    required: "密码不能为空!", 
    minlength: "密码至少六位!" 
   }, 
   confirm_password: { 
    required: "密码确认不能为空!", 
    equalTo: "两次输入密码不一致 !" 
   }, 
   address: { 
    required: "请选择出生地!", 
   }, 
   mobile: { 
    required: "手机不能为空!", 
    mobile: "手机格式不正确", 
   }, 
   email: { 
    required: "邮箱不能为空!", 
    email: "邮箱格式不正确", 
   }, 
  } 
 }); 
}) 
</script> 

messages: { 
 required: "This field is required.", 
 remote: "Please fix this field.", 
 email: "Please enter a valid email address.", 
 url: "Please enter a valid URL.", 
 date: "Please enter a valid date.", 
 dateISO: "Please enter a valid date (ISO).", 
 number: "Please enter a valid number.", 
 mobile: "请填写正确的手机号码.", 
 digits: "Please enter only digits.", 
 creditcard: "Please enter a valid credit card number.", 
 equalTo: "Please enter the same value again.", 
 maxlength: $.validator.format("Please enter no more than {0} characters."), 
 minlength: $.validator.format("Please enter at least {0} characters."), 
 rangelength: $.validator.format("Please enter a value between {0} and {1} characters long."), 
 range: $.validator.format("Please enter a value between {0} and {1}."), 
 max: $.validator.format("Please enter a value less than or equal to {0}."), 
 min: $.validator.format("Please enter a value greater than or equal to {0}.") 
} 

mobile: function( value, element ) { 
 return this.optional(element) || /^1[3|4|5|8][0-9]\d{8}$/.test(value); 
}