【问题标题】:jQuery plugin: Validation- labels are getting hiddenjQuery插件:验证-标签被隐藏
【发布时间】:2012-03-18 10:32:46
【问题描述】:

我使用jQuery plugin: Validation的如下代码:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>

<style type="text/css">
div.formerror
{
    color: red;
    margin-bottom: 6px;
    margin-top: 1px;
}
input.error, select.error, label.error
{
    border: 2px solid red;
    background-color: #FFFFD5;
    margin: 0px;
    color: red;
}
</style>


<!--   <script src="http://code.jquery.com/jquery-latest.js"></script> -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>

<script type="text/javascript" src="http://jzaefferer.github.com/jquery-validation/jquery.validate.js"></script>
<script type="text/javascript">

 $(document).ready(function(){
        $('#edit_form').validate({
            rules: {
                chooseMe: "required"
            },
            messages: {
                chooseMe: ""
            },

            messages: {
                name: "Name is missing",
                email: {
                    required: "E-mail address is missing",
                    email: "Your email address is not valid"
                }
            },


            highlight: function(element, errorClass, validClass) {
                $(element).addClass(errorClass).removeClass(validClass);
                $(element.form).find('[name='+element.name+']').each(function (i, sameName){
                   $(element.form).find("label[for=" + sameName.id + "]").addClass(errorClass); 
                });
            },
            unhighlight: function(element, errorClass, validClass) {
                $(element).removeClass(errorClass).addClass(validClass);
                $(element.form).find('[name='+element.name+']').each(function (i, sameName){
                   $(element.form).find("label[for=" + sameName.id + "]").removeClass(errorClass); 
                });
            },
            submitHandler: function(form) {
                $("#edit_form div.formerror").hide();
                alert("validated successfully - submit handler here");
            },
            invalidHandler: function(e, validator) {
                var errors = validator.numberOfInvalids();
                if (errors) {
                    var message = 'There are missing or invalid fields. They have been highlighted below.';
                    $("#edit_form div.formerror span").html(message);
                    $("#edit_form div.formerror").show();
                } else {
                    $("#edit_form div.formerror").hide();
                }
            }
        });
  });

</script>

</head>

<body>
<form class="cmxform" id="edit_form" method="get" action="">
    <div class="formerror" style="display: none">
        <span></span>
    </div>
    <fieldset>
    <legend>A simple comment form with submit validation and default messages</legend>
    <p>
     <label for="cname">Name</label>
     <em>*</em><input id="cname" name="name" size="25" class="required" minlength="2" />
    </p>
    <p>
     <label for="cemail">E-Mail</label>
     <em>*</em><input id="cemail" name="email" size="25"  class="required email" />
    </p>
    <p>
     <label for="curl">URL</label>
     <em>  </em><input id="curl" name="url" size="25"  class="phone" value="" />
    </p>
    <p>
     <label for="ccomment">Your comment</label>
     <em>*</em><textarea id="ccomment" name="comment" cols="22"  class="required"></textarea>
    </p>
    <p>
     <input class="submit" type="submit" value="Submit"/>
    </p>
    </fieldset>
</form>
</body>

</html>

效果很好,但是有两个问题:

  1. 当我提交错误、更正错误并重新提交表单时,Labes 会被隐藏。在这种情况下,已更正的文件是否会丢失标签(插件放置 display:none CSS 属性)。它将原始标签与错误标签混合在一起,并在没有错误时隐藏它们。如何解决这个问题?
  2. 为什么对于 tesxtarea 字段,当我更正错误时,它会立即将类更改为成功(这意味着它已被更正),而对于输入文件,我应该重新提交表单以便插件开始验证?

【问题讨论】:

    标签: jquery jquery-plugins validation


    【解决方案1】:

    下面的代码解决了这个问题。关于第 2 项,请参阅此链接: jQuery plugin: Validation - validation on key up does not work

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Untitled Document</title>
    
    <style type="text/css">
    div.formerror
    {
        color: red;
        margin-bottom: 6px;
        margin-top: 1px;
    }
    .error
    {
        border: 1px dashed red;
        background-color: #FFFFD5;
        margin: 0px;
        color: red;
    }
    label.errorForLabel
    {
        margin: 0px;
        color: red;
    }
    label.error{
        visibility:hidden;
        width:0;
        height:0;
    } 
    </style>
    
    
    <!--   <script src="http://code.jquery.com/jquery-latest.js"></script> -->
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
    
    <script type="text/javascript" src="http://jzaefferer.github.com/jquery-validation/jquery.validate.js"></script>
    <script type="text/javascript">
    var errorClassForLabel = 'errorForLabel';
     $(document).ready(function(){
            $('#edit_form').validate({
    
                errorClass: "error",
    
                validClass: "valid",
    
                rules: {
                    name: "required",
                    email: {
                        required: true,
                        email: true
                    },
                    url:{
                        required: true,
                        url:true
                    },
                    comment: "required"
                },
    
    /*          onkeyup: true,*/
    
                highlight: function(element, errorClass, validClass) {
                    $(element).addClass(errorClass).removeClass(validClass);
                    $(element.form).find('[name='+element.name+']').each(function (i, sameName){
                       $(element.form).find("label[for=" + sameName.id + "]").addClass(errorClassForLabel); 
                    });
                },
    
                unhighlight: function(element, errorClass, validClass) {
                    $(element).removeClass(errorClass).addClass(validClass);
                    $(element.form).find('[name='+element.name+']').each(function (i, sameName){
                       $(element.form).find("label[for=" + sameName.id + "]").removeClass(errorClassForLabel); 
                    });
                },
    
                submitHandler: function(form) {
                    $("#edit_form div.formerror").hide();
                    alert("validated successfully - submit handler here");
                },
    
                invalidHandler: function(e, validator) {
                    var errors = validator.numberOfInvalids();
                    if (errors) {
                        var message = 'There are missing or invalid fields. They have been highlighted below.';
                        $("#edit_form div.formerror span").html(message);
                        $("#edit_form div.formerror").show();
                    } else {
                        $("#edit_form div.formerror").hide();
                    }
                }
            });
      });
    
    </script>
    
    </head>
    
    <body>
    <form class="cmxform" id="edit_form" method="get" action="">
        <div class="formerror" style="display: none">
            <span></span>
        </div>
        <fieldset>
        <legend>A simple comment form with submit validation and default messages</legend>
        <p>
         <label for="name">Name</label>
         <em>*</em><input type="text" id="name" name="name" size="25" minlength="2" />
        </p>
        <p>
         <label for="email">E-Mail</label>
         <em>*</em><input type="text"  id="email" name="email" value="" maxlength="150"  size="25"/>
        </p>
        <p>
         <label for="url">URL</label>
         <em>  </em><input type="text" id="url" name="url" size="25" value="" /> 
        </p>
        <p>
         <label for="comment">Your comment</label>
         <em>*</em><textarea id="comment" name="comment" cols="22"></textarea>
        </p>
        <p>
         <input class="submit" type="submit" value="Submit"/>
        </p>
        </fieldset>
    </form>
    </body>
    
    </html>
    

    【讨论】:

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