有两个独立的<nav>独立工作的标签

Having 2 separate <nav> tags that work independently

本文关键字：独立 nav 工作 标签 两个      更新时间：2023-09-26

我试图得到两个单独的导航菜单独立操作取决于哪个按钮的用户点击，并显示在同一地方(左)。我有2个独立的功能，但只能让两个按钮打开相同的导航菜单(链接1,2,3不是链接4,5,6)。我可以得到第二个菜单打开，但只有当我改变ClassName为topnav而不是sidenav。我也尝试过getElementByid，但它也不起作用。谢谢你的帮助。

<div class="w3-half w3-container">
    <div id="FloatingBox" class="w3-card-16 w3-round w3-blue-grey w3-animate-opacity w3-animate-bottom" style="font-size:xx-large">
        <p><a title="Personal Information" onclick="w3_openpers()" class="w3-btn-floating w3-card-8 w3-animate-bottom w3-ripple w3-theme w3-red"><i class="fa fa-plus"></i></a> 
            Personal
        </p>
    </div>
</div>
<div class="w3-half w3-container">
    <div id="FloatingBox" class="w3-card-16 w3-round w3-blue-grey w3-animate-opacity w3-animate-bottom" style="font-size:xx-large; ">
        <p><a title="Professional Information" onclick="w3_openprof()" class="w3-btn-floating w3-card-8 w3-animate-bottom w3-ripple w3-theme w3-red"><i class="fa fa-plus"></i></a> 
            Professional
        </p>
    </div>
</div>
<!--- Side Navigation Personal--->
<nav id="persnav" class="w3-sidenav w3-white w3-card-2 w3-animate-left" style="display:none;z-index:5">
    <a href="javascript:void(0)">Link 1</a>     
    <a href="javascript:void(0)">Link 2</a>     
    <a href="javascript:void(0)">Link 3</a>
    <br>
    <a href="javascript:void(0)" onclick="w3_closepers()" class="w3-closenav w3-text-theme w3-text-red" >Close &times;</a>      
</nav>
<!--- Script for Side Navigation Personal--->
<script>
    function w3_openpers() {
        document.getElementsByClassName("w3-sidenav")[0].style.width = "20%";
        document.getElementsByClassName("w3-sidenav")[0].style.textAlign = "center";
        document.getElementsByClassName("w3-sidenav")[0].style.fontSize = "30px";
        document.getElementsByClassName("w3-sidenav")[0].style.paddingTop = "20%";
        document.getElementsByClassName("w3-sidenav")[0].style.display = "block";
        document.getElementsByClassName("w3-sidenav")[0].style.opacity = "1";
    }
    function w3_closepers() {
        document.getElementsByClassName("w3-sidenav")[0].style.display = "none";
    }
</script>
<!--- Side Navigation Professional--->
<nav id="profnav" class="w3-sidenav w3-white w3-card-2 w3-animate-right" style="display:none;z-index:5">
    <a href="javascript:void(0)">Link 4</a>     
    <a href="javascript:void(0)">Link 5</a>     
    <a href="javascript:void(0)">Link 6</a>
    <br>
    <a href="javascript:void(0)" onclick="w3_closeprof()" class="w3-closenav w3-text-theme w3-text-red" >Close &times;</a>      
</nav>
<!--- Script for Side Navigation Professional--->
<script>
    function w3_openprof() {
        document.getElementsByClassName("w3-sidenav")[0].style.width = "20%";
        document.getElementsByClassName("w3-sidenav")[0].style.textAlign = "center";
        document.getElementsByClassName("w3-sidenav")[0].style.fontSize = "30px";
        document.getElementsByClassName("w3-sidenav")[0].style.paddingTop = "20%";
        document.getElementsByClassName("w3-sidenav")[0].style.display = "block";
        document.getElementsByClassName("w3-sidenav")[0].style.opacity = "1";
    }
    function w3_closeprof() {
        document.getElementsByClassName("w3-sidenav")[0].style.display = "none";
    }
</script>

我建议让它更简单，只创建一个函数:

function w3_open(elNum) {
  var el = document.getElementsByClassName("w3-sidenav")[elNum];
    el.style.width = "20%";
    el.style.textAlign = "center";
    el.style.fontSize = "30px";
    el.style.paddingTop = "20%";
    el.style.display = "block";
    el.style.opacity = "1";
}
function w3_close(elNum) {
    document.getElementsByClassName("w3-sidenav")[elNum].style.display = "none";
}

那么你可以这样命名它:

<a title="Personal Information" onclick="w3_open(0)" class="w3-btn-floating w3-card-8 w3-animate-bottom w3-ripple w3-theme w3-red"><i class="fa fa-plus"></i></a>

， w3_open(0)瞄准第一个导航，w3_open(1)瞄准第二个导航。与关闭功能相同。
你可以通过添加一个CSS类来使它更简单:

    function w3_toggle(elNum) {
      document.getElementsByClassName("w3-sidenav")[elNum].classList.toggle("w3_open");
    }
.w3_sidenav.w3_open{
  width:20%;
  text-align:center;
  font-size:30px;
  padding-top:20%;
  display:block;
  opacity:1;
}

那么你只需要一个函数，你可以把它叫做w3_toggle(0)来切换导航打开/关闭

把第二个脚本改成:

    <script>
function w3_openprof() {
    document.getElementsByClassName("w3-sidenav")[1].style.width = "20%";
    document.getElementsByClassName("w3-sidenav")[1].style.textAlign = "center";
    document.getElementsByClassName("w3-sidenav")[1].style.fontSize = "30px";
    document.getElementsByClassName("w3-sidenav")[1].style.paddingTop = "20%";
    document.getElementsByClassName("w3-sidenav")[1].style.display = "block";
    document.getElementsByClassName("w3-sidenav")[1].style.opacity = "1";
}
function w3_closeprof() {
    document.getElementsByClassName("w3-sidenav")[1].style.display = "none";
}
</script>

作品太棒了!

尝试使用getElementsById代替getElementsByClassName

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