W3.CSS 导航选项卡 - 显示 2 个 ID

Question

我正在使用 W3.CSS 导航选项卡，但我遇到了问题。我有2个id，我想显示2个id当人们，例如，点击Tab "London"然后显示2个id。在 W3.CSS 导航选项卡代码中，我只能同时显示 1 个 ID，但我不知道如何再添加 1 个 ID 来显示

W3.CSS 导航标签代码

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>

<div class="w3-container">
  <h2>Tabs in a Grid</h2>

  <div class="w3-row">
    <a href="javascript:void(0)" onclick="openCity(event, 'London');">
      <div class="w3-third tablink w3-bottombar w3-hover-light-grey w3-padding">London</div>
    </a>
    <a href="javascript:void(0)" onclick="openCity(event, 'Paris');">
      <div class="w3-third tablink w3-bottombar w3-hover-light-grey w3-padding">Paris</div>
    </a>
    <a href="javascript:void(0)" onclick="openCity(event, 'Tokyo');">
      <div class="w3-third tablink w3-bottombar w3-hover-light-grey w3-padding">Tokyo</div>
    </a>
  </div>

  <div id="London" class="w3-container city" style="display:none">
    <h2>London</h2>
    <p>London is the capital city of England.</p>
  </div>

  <div id="Paris" class="w3-container city" style="display:none">
    <h2>Paris</h2>
    <p>Paris is the capital of France.</p> 
  </div>

  <div id="Tokyo" class="w3-container city" style="display:none">
    <h2>Tokyo</h2>
    <p>Tokyo is the capital of Japan.</p>
  </div>
</div>

<script>
function openCity(evt, cityName) {
  var i, x, tablinks;
  x = document.getElementsByClassName("city");
  for (i = 0; i < x.length; i++) {
    x[i].style.display = "none";
  }
  tablinks = document.getElementsByClassName("tablink");
  for (i = 0; i < x.length; i++) {
    tablinks[i].className = tablinks[i].className.replace(" w3-border-red", "");
  }
  document.getElementById(cityName).style.display = "block";
  evt.currentTarget.firstElementChild.className += " w3-border-red";
}
</script>

</body>
</html>

Answer 1

一个简单的解决方案是将多个城市名称而不是单个城市名称作为数组传递给 openCity 函数。

在下面的示例中，当您单击 London 选项卡时，将显示 ID 为 London 和 Paris 的 2 个选项卡的内容。

function openCity(evt, cityNames) {
    let i, x, tablinks;
    
    x = document.getElementsByClassName("city");
    for (i = 0; i < x.length; i++) {
        x[i].style.display = "none";
    }
    
    tablinks = document.getElementsByClassName("tablink");
    for (i = 0; i < x.length; i++) {
        tablinks[i].className = tablinks[i].className.replace(" w3-border-red", "");
    }
  
    cityNames.map(function(city) {
        document.getElementById(city).style.display = "block";
    });
    
    evt.currentTarget.firstElementChild.className += " w3-border-red";
}

<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">

<div class="w3-container">
    <h2>Tabs in a Grid</h2>

    <div class="w3-row">
        <a href="javascript:void(0)" onclick="openCity(event, ['London','Paris']);">
            <div class="w3-third tablink w3-bottombar w3-hover-light-grey w3-padding w3-border-red">London</div>
        </a>
        <a href="javascript:void(0)" onclick="openCity(event, ['Paris']);">
            <div class="w3-third tablink w3-bottombar w3-hover-light-grey w3-padding">Paris</div>
        </a>
        <a href="javascript:void(0)" onclick="openCity(event, ['Tokyo']);">
            <div class="w3-third tablink w3-bottombar w3-hover-light-grey w3-padding">Tokyo</div>
        </a>
    </div>

    <div id="London" class="w3-container city">
        <h2>London</h2>
        <p>London is the capital city of England.</p>
    </div>

    <div id="Paris" class="w3-container city" style="display:none">
        <h2>Paris</h2>
        <p>Paris is the capital of France.</p> 
    </div>

    <div id="Tokyo" class="w3-container city" style="display:none">
        <h2>Tokyo</h2>
        <p>Tokyo is the capital of Japan.</p>
    </div>
</div>

W3.CSS 导航选项卡 - 显示 2 个 ID

W3.CSS Navigation Tabs - Show 2 id

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javascript

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w3-css