當我選擇另一個元素時如何洗掉classList？

當我點擊一個“冒名頂替者”時，我希望它變成帶有一些文本的灰色，正如您在我的 CSS 中看到的選擇器.imposter.voted。但是當我單擊另一個冒名頂替者時，我希望那個冒名頂替者顯示為灰色，而前一個冒名頂替者再次像往常一樣出現。

當我嘗試時this.classList.remove("voted")它不起作用，它只會使我選擇的所有冒名頂替者變成灰色。該類不會被洗掉。我不明白我哪里出錯了。

imposters = document.querySelectorAll(".imposter");

for (let i = 0; i < imposters.length; i  ) {
  imposters[i].addEventListener("click", function() {
    this.classList.add("voted");
  });
}

.imposter.voted {
  background-color: gray;
  position: relative;
  opacity: 0.7;
}

.imposter.voted::after {
  content: "I voted";
  position: absolute;
  top: 5px;
  right: 5px;
  display: inline-block;
  font-family: "Comic Sans Ms";
  color: red;
}

.imposters__voting {
  text-align: right;
}

<main class="dashboard">
  <h1>Who Is The Imposter?</h1>
  <div class="imposters">
    <div class="imposter">Baba</div>
    <div class="imposter">Baraki</div>
    <div class="imposter">Garfield</div>
    <div class="imposter">Erik</div>
    <div class="imposter">GreenBlood4</div>
    <div class="imposter">Easter</div>
  </div>
</main>

uj5u.com熱心網友回復：

只需.voted從所有div.imposterif 中洗掉，然后將.voted類添加到單擊的元素。

imposters = document.querySelectorAll(".imposter");

for (let i = 0; i < imposters.length; i  ) {
  imposters[i].addEventListener("click", function() {
    var count = 0;
    while(count<imposters.length){
      imposters[count  ].classList.remove('voted');
    }
    this.classList.add("voted");
  });
}

.imposter.voted {
  background-color: gray;
  position: relative;
  opacity: 0.7;
}

.imposter.voted::after {
  content: "I voted";
  position: absolute;
  top: 5px;
  right: 5px;
  display: inline-block;
  font-family: "Comic Sans Ms";
  color: red;
}

.imposters__voting {
  text-align: right;
}

<main class="dashboard">
  <h1>Who Is The Imposter?</h1>
  <div class="imposters">
    <div class="imposter">Baba</div>
    <div class="imposter">Baraki</div>
    <div class="imposter">Garfield</div>
    <div class="imposter">Erik</div>
    <div class="imposter">GreenBlood4</div>
    <div class="imposter">Easter</div>
  </div>
</main>

uj5u.com熱心網友回復：

您可以記住變數中當前選定的冒名頂替者的索引currentIndex。然后點擊后你需要通過其余的冒名頂替者并洗掉類voted。

let imposters = document.querySelectorAll(".imposter");

let currentIndex = null;

for (let i = 0; i < imposters.length; i  ) {
  imposters[i].addEventListener("click", function() {
    this.classList.add("voted");
    
    currentIndex = i;
    
    imposters.forEach(function(imposter, index){
        if(index != currentIndex) {
            imposter.classList.remove("voted"); 
        }
    });
  });
}

.imposter.voted {
  background-color: red;
  position: relative;
  opacity: 0.7;
}

.imposter.voted::after {
  content: "I voted";
  position: absolute;
  top: 5px;
  right: 5px;
  display: inline-block;
  font-family: "Comic Sans Ms";
  color: red;
}

.imposters__voting {
  text-align: right;
}

<main class="dashboard">
  <h1>Who Is The Imposter?</h1>
  <div class="imposters">
    <div class="imposter">Baba</div>
    <div class="imposter">Baraki</div>
    <div class="imposter">Garfield</div>
    <div class="imposter">Erik</div>
    <div class="imposter">GreenBlood4</div>
    <div class="imposter">Easter</div>
  </div>
</main>

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