javascript - 如果值标签是某物，则添加 html

Question

我有一个登录页面，我想自定义它... 该页面是由其他代码创建的，所以我想使用 jquery 添加外部文件进行自定义。 在这种情况下，我想在登录表单之前添加一个字符串，因此在值为用户名的标签之前...

但是没用...

    if($('label').val()== "Username*"){
         $(this).before('<h1>Effettua il login:</hi><br>');
      }

这是 jsfiddle 代码: http://jsfiddle.net/fw6nong1/2/

Answer 1

您可以通过其 for 属性选择标签。

 var linkelimina = self.location.href;
 $(document).ready(function () {
     var link = self.location.href;
     if (link == linkelimina || link == "http://www.webisite.com/user" || link == "http://www.website.com/user/password") {
         $('.tabs').css('display', 'none');
         $('.description').css('display', 'none');
         
        
           $('label[for="edit-name"]').before('<h1>Effettua il login:</hi><br>');
          
     }
 });

 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="section">	<a id="main-content"></a> 
    <div class="tabs">
        	<h2 class="element-invisible">Primary tabs</h2>

        <ul class="tabs primary">
            <li><a href="/user/register">Create new account</a>

            </li>
            <li class="active"><a class="active" href="/user">Log in<span class="element-invisible">(active tab)</span></a>

            </li>
            <li><a href="/user/password">Request new password</a>

            </li>
        </ul>
    </div>
    <div class="region region-content">
        <div class="block block-system" id="block-system-main">
            <div class="content">
                <form accept-charset="UTF-8" id="user-login" method="post" action="/user">
                    <div>
                        <div class="form-item form-type-textfield form-item-name">
                            <label for="edit-name">Username <span title="This field is required." class="form-required">*</span>

                            </label>
                            <input type="text" class="form-text required" maxlength="60" size="60" value="" name="name" id="edit-name">
                            <div class="description">Enter your website username.</div>
                        </div>
                        <div class="form-item form-type-password form-item-pass">
                            <label for="edit-pass">Password <span title="This field is required." class="form-required">*</span>

                            </label>
                            <input type="password" class="form-text required" maxlength="128" size="60" name="pass" id="edit-pass">
                            <div class="description">Enter the password that accompanies your username.</div>
                        </div>
                        <input type="hidden" value="form-l7DnfqR5ZJej8oGkHS8x_9YmAzOYnFX0qxiuSxY5XZI" name="form_build_id">
                        <input type="hidden" value="user_login" name="form_id">
                        <div id="edit-actions" class="form-actions form-wrapper">
                            <input type="submit" class="form-submit" value="Log in" name="op" id="edit-submit">
                        </div>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>