如果输入为空，则以逐步形式输入错误 Class

Question

您好，我正在尝试在我的表单中进行验证。

更新代码

$(document).ready(function () {
    $('.registration-form fieldset:first-child').fadeIn('slow');

    $('.registration-form input[type="text"]').on('focus', function () {
        $(this).removeClass('input-error');
    });

    // next step
    $('.registration-form .btn-next').on('click', function () {
        var parent_fieldset = $(this).parents('fieldset');
        var next_step = true;

        parent_fieldset.find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                $(this).addClass('input-error');
                next_step = false;
            } else {
                $(this).removeClass('input-error');
            }
        });

        if (next_step) {
            parent_fieldset.fadeOut(400, function () {
                $(this).next().fadeIn();
            });
        }

    });

    // previous step
    $('.registration-form .btn-previous').on('click', function () {
        $(this).parents('fieldset').fadeOut(400, function () {
            $(this).prev().fadeIn();
        });
    });

    // submit
    $('.registration-form').on('submit', function (e) {

        $(this).find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                e.preventDefault();
                $(this).addClass('input-error');
            } else {
                $(this).removeClass('input-error');
            }
        });

    });


});
</script>

.input-error {
  color:yellow;
  background-color:red;
}

/*style.css**/






/***** Top content *****/

.form-box {
    padding-top: 0px;
    font-family: Century, Tahoma, Arial, Verdana, Georgia;
              
}

.form-top {
    overflow: hidden;
    padding: 0 25px 15px 25px;
    background: #008ade;
    -moz-border-radius: 4px 4px 0 0;
    -webkit-border-radius: 4px 4px 0 0;
    border-radius: 4px 4px 0 0;
    text-align: left;
    color: #fff;
    transition: opacity .3s ease-in-out;
}

.form-top h3 {
    color: #fff;
}

.form-bottom {
    padding: 25px 25px 30px 25px;
    background: #c3dde8;
    -moz-border-radius: 0 0 4px 4px;
    -webkit-border-radius: 0 0 4px 4px;
    border-radius: 0 0 4px 4px;
    text-align: left;
    transition: all .4s ease-in-out;
}

.form-bottom:hover {
    -webkit-box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}

form .form-bottom button.btn {
    min-width: 105px;
}



form.registration-form fieldset {
    display: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<section>
   <h1 class="pagetitle"><span>&nbsp;<i class="material-icons md-36">card_travel</i> Create Distributor</span></h1>
</section>


  <div class="assessment-container container">
        <div class="row">
            <div class="col-md-6 form-box">
       
            <?php 

            $attributes = array('class' => 'registration-form');
            echo form_open('' ,$attributes); ?>
         
                    <fieldset class="registration-form">
                        <div class="form-top">
                        <div class="form-top-left">
                            <h3><span><i class="material-icons md-36">account_balance</i>&nbsp;</span>Organization Information</h3>
                        </div>
                    </div>
                    <div class="form-bottom">
                        <div class="row">
                            <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Organization Name</label>
                                    <input type="text" name="" class= "form-control" required title="This Field is Required">
                                </div>
                            <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Pincode</label>
                                <input type="text" name="" required class= "form-control">
                            </div>
                        </div>
                        <div class="form-group label-floating"">
                            <label for="i5" class="control-label">Address 1</label>
                            <input type="text" name="" class= "form-control">
                        </div>
                        <div class="form-group" style="margin-bottom:3px;">
                            <div class="row">
                                <div class="form-group col-md-5 label-floating">
                                    <label for="i5" class="control-label">City</label>
                                    <input type="text" name="" class= "form-control">
                                    <span class="help-block">City Organization</span>
                                </div>
                                <div class="form-group col-md-5 label-floating">
                                    <label for="i5" class="control-label">State</label>
                                    <input type="text" name="" class= "form-control">
                                    <span class="help-block">Insert a State</span>
                                </div>
                            </div>
                        </div>
                        <div class="form-group label-floating"">
                            <label for="i5" class="control-label">Country</label>
                            <input type="text" name="" class= "form-control">
                            <span class="help-block">Insert a State</span>
                        </div>
                        <button type="button" class="btn btn-next" style="margin-top: 20px;">Next</button>
                    </div>
                    </fieldset>


                    <!--END OF ORGANIZATION INFORMATION -->
                       <fieldset>
                        <div class="form-top">
                            <div class="form-top-left">
                                <h3><span><i class="material-icons md-36">account_box</i></span>Sales & Technical Contact</h3>
                                
                            </div>
                        </div>
                        <div class="form-bottom">
                                
                        <h4>Sales Contact</h4>
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">First Name</label>
                                      <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Last Name</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                            </div>

                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Email</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Phone</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                            </div>
                            


                            <h4>Technical Contact</h4>
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">First Name</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Last Name</label>
                                      <input type="text" name="" class= "form-control">
                                </div>
                            </div>

                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Email </label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Phone</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                            </div>
                            
                             <button type="button" class="btn btn-previous" style="margin-top: 20px;">Previous</button>
                            <button type="button" class="btn btn-next" style="margin-top: 20px;">Next</button>
                        </div>
                    </fieldset>



                    <fieldset>
                        <div class="form-top">
                            <div class="form-top-left">
                                <h3><span><i class="material-icons md-36">https</i></span>Distributor Information</h3>
                                
                            </div>
                        </div>
                        
                        <div class="form-bottom">
                            

                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Distributor Username</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Distributor Password</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                            </div>

                            <h4>Number of License for products</h4>
                            
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">MLC</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">FMS</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                            </div>



                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">UMC</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">PTT</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                            </div>
                            
                            

                       

                            <button type="button" class="btn btn-previous">Previous</button>
                            <button type="submit" class="btn btn-raised btn-info">Submit</button>
                        </div>
                    </fieldset>


<?php echo form_close();?>
               
            </div>
        </div>
    </div>

现在这是多级表单。如果必填字段上的值保持为空，我想添加错误 class 例如组织名称是必填字段。

现在我想在按下一个按钮时显示错误 class。我的代码有什么问题？

Answer 1

现在可以了，你在元素 class 声明中有几个双引号，，像这样：class="form-group label-floating"" 我只稍微清理了一下:)

$(document).ready(function () {
    $('.registration-form fieldset:first-child').fadeIn('slow');

    $('.registration-form input[type="text"]').on('focus', function () {
        $(this).removeClass('input-error');
    });

    // next step
    $('.registration-form .btn-next').on('click', function () {
        var parent_fieldset = $(this).parents('fieldset');
        var next_step = true;

        parent_fieldset.find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                $(this).addClass('input-error');
                next_step = false;
            } else {
                $(this).removeClass('input-error');
            }
        });

        if (next_step) {
            parent_fieldset.fadeOut(400, function () {
                $(this).next().fadeIn();
            });
        }

    });

    // previous step
    $('.registration-form .btn-previous').on('click', function () {
        $(this).parents('fieldset').fadeOut(400, function () {
            $(this).prev().fadeIn();
        });
    });

    // submit
    $('.registration-form').on('submit', function (e) {

        $(this).find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                e.preventDefault();
                $(this).addClass('input-error');
            } else {
                $(this).removeClass('input-error');
            }
        });

    });


});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>


<div class="registration-form"> 
<fieldset>
                        <div class="form-top">
                            <div class="form-top-left">
                                <h3><span><i class="material-icons md-36">account_balance</i>&nbsp;</span>Organization Information</h3>

                            </div>
                        </div>
                        <div class="form-bottom">
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Organization Name</label>
                                    <input type="text" name="" class= "form-control" required title="This Field is Required">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Pincode</label>
                                     <input type="text" name="" required class= "form-control">
                                </div>
                            </div>

                            <div class="form-group label-floating">
                            <label for="i5" class="control-label">Address 1</label>
                              <input type="text" name="" class= "form-control">
                            </div>

                            <div class="form-group" style="margin-bottom:3px;">
                                <div class="row">
                                    <div class="form-group col-md-5 label-floating">
                                        <label for="i5" class="control-label">City</label>
                                          <input type="text" name="" class= "form-control">
                                       <span class="help-block">City Organization</span>
                                    </div>
                                    <div class="form-group col-md-5 label-floating">
                                        <label for="i5" class="control-label">State</label>
                                          <input type="text" name="" class= "form-control">
                                        <span class="help-block">Insert a State</span>
                                    </div>
                                </div>
                            </div>


                            <div class="form-group label-floating">
                              <label for="i5" class="control-label">Country</label>
                                         <input type="text" name="" class= "form-control">
                                        <span class="help-block">Insert a State</span>
                            </div>

                            <button type="button" class="btn btn-next" style="margin-top: 20px;">Next</button>
                        </div>
                    </fieldset>
  
  </div>

Answer 2

您需要将 class="registration-form" 添加到您的表单或包含您的下一个按钮的某个元素，就像我通过添加到 <fieldset class="registration-form">

所做的那样

我还添加了 css 以在出现错误时使输入具有红色背景，检查下面的输出：

$(document).ready(function () {
    $('.registration-form fieldset:first-child').fadeIn('slow');

    $('.registration-form input[type="text"]').on('focus', function () {
        $(this).removeClass('input-error');
    });

    // next step
    $('.registration-form .btn-next').on('click', function () {
        var parent_fieldset = $(this).parents('fieldset');
        var next_step = true;

        parent_fieldset.find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                $(this).addClass('input-error');
                next_step = false;
            } else {
                $(this).removeClass('input-error');
            }
        });

        if (next_step) {
            parent_fieldset.fadeOut(400, function () {
                $(this).next().fadeIn();
            });
        }

    });

    // previous step
    $('.registration-form .btn-previous').on('click', function () {
        $(this).parents('fieldset').fadeOut(400, function () {
            $(this).prev().fadeIn();
        });
    });

    // submit
    $('.registration-form').on('submit', function (e) {

        $(this).find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                e.preventDefault();
                $(this).addClass('input-error');
            } else {
                $(this).removeClass('input-error');
            }
        });

    });


});

.input-error {
  color:yellow;
  background-color:red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<fieldset class="registration-form">
<div class="form-top">
    <div class="form-top-left">
        <h3><span><i class="material-icons md-36">account_balance</i>&nbsp;</span>Organization Information</h3>
    </div>
</div>
<div class="form-bottom">
    <div class="row">
        <div class="form-group col-md-6 label-floating">
            <label for="i5" class="control-label">Organization Name</label>
                <input type="text" name="" class= "form-control" required title="This Field is Required">
            </div>
        <div class="form-group col-md-6 label-floating">
            <label for="i5" class="control-label">Pincode</label>
            <input type="text" name="" required class= "form-control">
        </div>
    </div>
    <div class="form-group label-floating"">
        <label for="i5" class="control-label">Address 1</label>
        <input type="text" name="" class= "form-control">
    </div>
    <div class="form-group" style="margin-bottom:3px;">
        <div class="row">
            <div class="form-group col-md-5 label-floating">
                <label for="i5" class="control-label">City</label>
                <input type="text" name="" class= "form-control">
                <span class="help-block">City Organization</span>
            </div>
            <div class="form-group col-md-5 label-floating">
                <label for="i5" class="control-label">State</label>
                <input type="text" name="" class= "form-control">
                <span class="help-block">Insert a State</span>
            </div>
        </div>
    </div>
    <div class="form-group label-floating"">
        <label for="i5" class="control-label">Country</label>
        <input type="text" name="" class= "form-control">
        <span class="help-block">Insert a State</span>
    </div>
    <button type="button" class="btn btn-next" style="margin-top: 20px;">Next</button>
</div>
</fieldset>

问题进展：

$(document).ready(function () {
    $('fieldset:first-child').fadeIn('slow');

    $('input[type="text"]').on('focus', function () {
        $(this).removeClass('input-error');
    });

    // next step
    $('.btn-next').on('click', function () {
        var parent_fieldset = $(this).parents('fieldset');
        var next_step = true;

        parent_fieldset.find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                $(this).addClass('input-error');
                next_step = false;
            } else {
                $(this).removeClass('input-error');
            }
        });

        if (next_step) {
            parent_fieldset.fadeOut(400, function () {
                $(this).next().fadeIn();
            });
        }

    });

    // previous step
    $('.btn-previous').on('click', function () {
        $(this).parents('fieldset').fadeOut(400, function () {
            $(this).prev().fadeIn();
        });
    });

    // submit
    $('button[type="submit"]').on('click', function (e) {
        
        $(this).parents('fieldset').find('input[type="text"],input[type="email"]').each(function () {
            if ($(this).val() == "") {
                e.preventDefault();
                $(this).addClass('input-error');
            } else {
                $(this).removeClass('input-error');
            }
        });

    });


});

.input-error {
  color:yellow;
  background-color:red;
}

/*style.css**/






/***** Top content *****/

.form-box {
    padding-top: 0px;
    font-family: Century, Tahoma, Arial, Verdana, Georgia;
              
}

.form-top {
    overflow: hidden;
    padding: 0 25px 15px 25px;
    background: #008ade;
    -moz-border-radius: 4px 4px 0 0;
    -webkit-border-radius: 4px 4px 0 0;
    border-radius: 4px 4px 0 0;
    text-align: left;
    color: #fff;
    transition: opacity .3s ease-in-out;
}

.form-top h3 {
    color: #fff;
}

.form-bottom {
    padding: 25px 25px 30px 25px;
    background: #c3dde8;
    -moz-border-radius: 0 0 4px 4px;
    -webkit-border-radius: 0 0 4px 4px;
    border-radius: 0 0 4px 4px;
    text-align: left;
    transition: all .4s ease-in-out;
}

.form-bottom:hover {
    -webkit-box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}

form .form-bottom button.btn {
    min-width: 105px;
}



form.registration-form fieldset {
    display: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<section>
   <h1 class="pagetitle"><span>&nbsp;<i class="material-icons md-36">card_travel</i> Create Distributor</span></h1>
</section>


  <div class="assessment-container container">
        <div class="row">
            <div class="col-md-6 form-box">
       
            <?php 

            $attributes = array('class' => 'registration-form');
            echo form_open('' ,$attributes); ?>
         
                    <fieldset class="registration-form">
                        <div class="form-top">
                        <div class="form-top-left">
                            <h3><span><i class="material-icons md-36">account_balance</i>&nbsp;</span>Organization Information</h3>
                        </div>
                    </div>
                    <div class="form-bottom">
                        <div class="row">
                            <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Organization Name</label>
                                    <input type="text" name="" class= "form-control" required title="This Field is Required">
                                </div>
                            <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Pincode</label>
                                <input type="text" name="" required class= "form-control">
                            </div>
                        </div>
                        <div class="form-group label-floating"">
                            <label for="i5" class="control-label">Address 1</label>
                            <input type="text" name="" class= "form-control">
                        </div>
                        <div class="form-group" style="margin-bottom:3px;">
                            <div class="row">
                                <div class="form-group col-md-5 label-floating">
                                    <label for="i5" class="control-label">City</label>
                                    <input type="text" name="" class= "form-control">
                                    <span class="help-block">City Organization</span>
                                </div>
                                <div class="form-group col-md-5 label-floating">
                                    <label for="i5" class="control-label">State</label>
                                    <input type="text" name="" class= "form-control">
                                    <span class="help-block">Insert a State</span>
                                </div>
                            </div>
                        </div>
                        <div class="form-group label-floating"">
                            <label for="i5" class="control-label">Country</label>
                            <input type="text" name="" class= "form-control">
                            <span class="help-block">Insert a State</span>
                        </div>
                        <button type="button" class="btn btn-next" style="margin-top: 20px;">Next</button>
                    </div>
                    </fieldset>


                    <!--END OF ORGANIZATION INFORMATION -->
                       <fieldset>
                        <div class="form-top">
                            <div class="form-top-left">
                                <h3><span><i class="material-icons md-36">account_box</i></span>Sales & Technical Contact</h3>
                                
                            </div>
                        </div>
                        <div class="form-bottom">
                                
                        <h4>Sales Contact</h4>
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">First Name</label>
                                      <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Last Name</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                            </div>

                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Email</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Phone</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                            </div>
                            


                            <h4>Technical Contact</h4>
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">First Name</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Last Name</label>
                                      <input type="text" name="" class= "form-control">
                                </div>
                            </div>

                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Email </label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Phone</label>
                                     <input type="text" name="" class= "form-control">
                                </div>
                            </div>
                            
                             <button type="button" class="btn btn-previous" style="margin-top: 20px;">Previous</button>
                            <button type="button" class="btn btn-next" style="margin-top: 20px;">Next</button>
                        </div>
                    </fieldset>



                    <fieldset>
                        <div class="form-top">
                            <div class="form-top-left">
                                <h3><span><i class="material-icons md-36">https</i></span>Distributor Information</h3>
                                
                            </div>
                        </div>
                        
                        <div class="form-bottom">
                            

                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">Distributor Username</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">Distributor Password</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                            </div>

                            <h4>Number of License for products</h4>
                            
                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">MLC</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">FMS</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                            </div>



                            <div class="row">
                                <div class="form-group col-md-6 label-floating">
                                <label for="i5" class="control-label">UMC</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                                <div class="form-group col-md-6 label-floating">
                                    <label for="i5" class="control-label">PTT</label>
                                    <input type="text" name="" class= "form-control">
                                </div>
                            </div>
                            
                            

                       

                            <button type="button" class="btn btn-previous">Previous</button>
                            <button type="submit" class="btn btn-raised btn-info">Submit</button>
                        </div>
                    </fieldset>


<?php echo form_close();?>
               
            </div>
        </div>
    </div>

如果输入为空，则以逐步形式输入错误 Class

Put Error Class if input is empty in step wise form

html

javascript

jquery-validate

twitter-bootstrap-3