Question

我有带有标签的部分，需要再次单击该标签时关闭这些标签。

我认为这需要切换方法，但是我不确定该怎么做。

这是HTML：

<div class="tab">
 <button class="tablinks" id="tab1" onclick="openSubSvc(event, 'srv1-sub1')" >Sub-Service 1</button>
 <button class="tablinks" id="tab2" onclick="openSubSvc(event, 'srv1-sub2')">Sub-Service 2</button>
 <button class="tablinks" id="tab3" onclick="openSubSvc(event, 'srv1-sub3')">Sub-Service 3</button>
</div>

<div id="srv1-sub1" class="tab-content">
 <p>Text</p>
</div>

<div id="srv1-sub2" class="tab-content">
 <p>Text</p>
</div>

<div id="srv1-sub3" class="tab-content">
 <p>Text</p>
</div>

这是制表符功能：

function openSubSvc(evt, subSvcName) {
    var i, tabcontent, tablinks;
    tabcontent = document.getElementsByClassName("tab-content");
    for (i = 0; i < tabcontent.length; i++) {
        tabcontent[i].style.display = "none";
    }
    tablinks = document.getElementsByClassName("tablinks");
    for (i = 0; i < tablinks.length; i++) {
        tablinks[i].className = tablinks[i].className.replace(" active", "");
    }
    document.getElementById(subSvcName).style.display = "block";
    evt.currentTarget.className += " active";
}

这是CSS：

.tab {
 float: left;
 padding:0!important;
 margin:0!important;
}

.tab button {
 padding: 15px;
 width: 100%;
 text-align: left;
 transition: 0.3s;
}

.tab button:last-child {margin-bottom:0;}
.tab button:hover {background-color: #ddd;}
.tab button.active {background-color: #ccc;}

.tab-content {
 width:70.8%!important;
 margin-left:2%!important;
 margin-bottom:0;
 padding:0!important;
}

因此，如果单击第一个选项卡并打开内容，那么我需要在再次单击内容时将其关闭。

Answer 1

您必须在单击的按钮上检查active类。我只是用if condition更新您的代码。谢谢

function openSubSvc(evt, subSvcName) {
    var activeClass = evt.target.classList.contains("active")
    if(!activeClass){
      var i, tabcontent, tablinks;
      tabcontent = document.getElementsByClassName("tab-content");
      for (i = 0; i < tabcontent.length; i++) {
          tabcontent[i].style.display = "none";
      }
      tablinks = document.getElementsByClassName("tablinks");
      for (i = 0; i < tablinks.length; i++) {
          tablinks[i].className = tablinks[i].className.replace(" active", "");
      }
      document.getElementById(subSvcName).style.display = "block";
      evt.currentTarget.className += " active";
    } else {
      document.getElementById(subSvcName).style.display = "none";
      evt.target.classList.remove("active");
    }
}

<div class="tab w-30 ml-100 mp-100">
 <button class="tablinks" id="tab1" onclick="openSubSvc(event, 'srv1-sub1')" >Sub-Service 1</button>
 <button class="tablinks" id="tab2" onclick="openSubSvc(event, 'srv1-sub2')">Sub-Service 2</button>
 <button class="tablinks" id="tab3" onclick="openSubSvc(event, 'srv1-sub3')">Sub-Service 3</button>
</div>

<div id="srv1-sub1" class="tab-content">
 <p>Text 1</p>
</div>

<div id="srv1-sub2" class="tab-content">
 <p>Text 2</p>
</div>

<div id="srv1-sub3" class="tab-content">
 <p>Text 3</p>
</div>

Answer 2

您可以检查单击的选项卡是否已经可见。当您这样做时：

document.getElementById(subSvcName).style.display = "block";

首先，请问它是否已经block（前面的内容未经过修饰）：

var el = document.getElementById(subSvcName);

if (el.style.display !== 'none') {
    el.style.display = 'none'; // hide if already visible
} else {
    el.style.display = 'block' // show otherwise
}

Answer 3

您可以通过以下方式更新功能：

function openSubSvc(evt, subSvcName) {
    var i, tabcontent, tablinks, me, shoulOpenTab;

    me = document.getElementById(subSvcName);
    // Checks if this tab has class active
    isActive = me.classList.contains("active");

    tabcontent = document.getElementsByClassName("tab-content");
    for (i = 0; i < tabcontent.length; i++) {
        tabcontent[i].style.display = "none";
    }
    tablinks = document.getElementsByClassName("tablinks");
    for (i = 0; i < tablinks.length; i++) {
        tablinks[i].className = tablinks[i].className.replace(" active", "");
    }

    // If this tab has active class onClick, you don't need to select again
    if (!isActive) {
        me.style.display = "block";
        evt.currentTarget.className += " active";
    }
}

再次单击时关闭javascript选项卡

3 个答案: