Question

我试图让两个单独的导航菜单独立运行，具体取决于用户点击的按钮，并显示在同一个地方（左）。我有2个单独的功能，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）。我可以打开第二个菜单，但前提是我将ClassName更改为topnav而不是sidenav。我也试过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>

Answer 1

我建议只需制作一个功能就可以简化它：

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";
}

然后你会把它称为：

<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>

以w3_open(0)定位第一个导航，w3_open(1)定位第二个导航。与关闭功能相同。
你可以通过CSS类来使它变得更简单：

    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;
}

然后你只需要一个功能，你只需要调用它w3_toggle(0)来切换导航打开/关闭。

Answer 2

获得提示将第二个脚本更改为：

    <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>

效果很好！

Answer 3

尝试使用getElementsById而不是getElementsByClassName

拥有2个独立工作的<nav>标签

3 个答案: