javascript - 在 WordPress 主导航中选择一个 href 以打开模式

Question

我正在创建 WordPress 主题，并尝试通过单击导航菜单内包含 a href 的 li 元素来打开模式

我的代码在静态 html 中运行:

// Get the modal
var modal1 = document.getElementById("myModal-registration");

// Get the button that opens the modal
var btn1 = document.getElementById("sign-up");

// Get the <span> element that closes the modal
var span1 = document.getElementsByClassName("close")[0];

// When the user clicks the button, open the modal 
btn1.onclick = function() {
    modal1.style.display = "block";
};

// When the user clicks on <span> (x), close the modal
span1.onclick = function() {
    modal1.style.display = "none";
};


// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal1) {
        modal1.style.display = "none";
    }
};

.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    padding-top: 100px; /* Location of the box */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
    z-index: 1000;
}


/* Modal Content */
.modal-content {
    background-color: #fefefe;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #888;
    width: 60%;
    @media screen and (max-width: 420px) {
        width: 100%; 
    }
    .container {
        font-family: 'Open Sans', sans-serif;
        display: block;
        font-size: 18px;
        line-height: 20px;
      //  margin: 0 auto;
    }
}

/* The Close Button */
.close {
    color: #aaaaaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

 <nav class="navBar">
        <nav class="wrapper">            
            <ul>       
                <li class="pure-menu-link"><a href="#sign-in" id="sign-up">SIGN UP</a></li> 
            </ul>  
        </nav>
    </nav>
    
    
 

    <div id="myModal-registration" class="modal">
  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">&times;</span>
      <form class="modal-content-animate" action="/action_page.php">
    <div class="container">
      <!--<label><b>Email</b></label>-->
      <input type="text" placeholder="Enter Email" name="email" required>
        <br>
      <input type="password" placeholder="Enter Password" name="psw" required>
        <br>
      <input type="password" placeholder="Repeat Password" name="psw-repeat" required>
         <br>
      <div class="clearfix">
        <button type="submit" class="signupbtn">Sign Up</button>
        <button type="button" onclick="document.getElementById('myModal-registration').style.display='none'" class="cancelbtn">Cancel</button>
      </div>
    </div>
  </form>
</div>
</div>
    

但是在 WordPress 中，菜单是在 functions.php 中注册的:

function register_theme_menus() {

    register_nav_menus(array( 
        'primary-navigation' => __( 'Primary Navigation' ),
    ));
}

并在 header.php 中使用 PHP 进行调用:

   wp_nav_menu(array(
                'container' => 'ul',
                'menu_class' => '',
                'theme_location' => 'primary-navigation',
                'menu' => 'primary-navigation'
           )); 

毕竟，生成的 HTML 代码没有 a href 的 id:

<ul id="menu-main-navigation" class="">
<li id="menu-item-20" class="pure-menu-link menu-item menu-item-type-custom menu-item-object-custom menu-item-20"><a href="#sign-up">SIGN UP</a></li>
</ul>

在 WordPress 菜单选项中设置了带有 # 的自定义 URL:

并尝试使用 JS 将其选为 a href:

var btn1 = document.querySelectorAll("a[href^='#sign-up']");

但没有任何像样的结果。我是否在这里遗漏了一点，在这种情况下仅使用 JS 不是一个有效的选项？如果您还有任何其他问题，请告诉我。非常感谢所有可能的帮助，将期待。

Answer 1

wp 菜单中的菜单项 (li) 通常具有唯一的类。在你的情况下是 menu-item-20您可以使用 .menu-item-20 a 定位您所询问的链接所以使用

// Get the button that opens the modal
var btn1= document.querySelector(".menu-item-20>a")