点击翻转卡片使其保持翻转状态

Question

我已经用HTML和CSS制作了带鼠标悬停的翻转卡片。

​

body {
  color: #e0e1dd;
  font-family: "Poppins", sans-serif;
}
.back_page {
  padding: 1em;
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 3;
}
.back_page img {
  border-radius: 20px;
  height: 1.5em;
  width: 1.5em;
}
a img:hover {
  background:#415a77;
}
.square {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 50px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}
.box {
  cursor: pointer;
  width: 300px;
  height: 200px;
  margin-bottom: 30px;
}
/* BOX 1 */

.center1 {
  display: flex;
  justify-content: center;
  align-items: center;
}

.front1 {
  position: absolute;
  width: 300px;
  height: 200px;
  background-color: #778da9;
  transform: perspective(800px);
  backface-visibility: hidden;
  transition: all 0.5s;
  overflow: hidden;
  border-radius: 20px;
}

.box1:hover .front1 {
  transform: rotateX(180deg);
}
.front1::before {
  content: "";
  position: absolute;
  bottom: -25px;
  border-radius: 50%;
  background: #6e2626;
  width: 50px;
  height: 50px;
}

.back1 {
  position: absolute;
  width: 300px;
  height: 200px;
  background: #415a77;
  transform: perspective(800px) rotateY(0deg);
  backface-visibility: hidden;
  transition: all 0.5s;
  flex-direction: column;
  transform: rotateX(180deg);
  border-radius: 20px;
}

.box1:hover .back1 {
  transform: rotateX(0deg);
}

.back1 p {
  margin: 10px 30px;
  font-size: 20px;
  text-align: center;
}

<div class="square">
        <div class="box1 box">
            <div class="front1 center1">
                <h1>Front</h1>
            </div>
            <div class="back1 center1">
                <p>Back</p>
            </div>
        </div>
    </div>

​

我想这样做后，点击“后退”的卡片不会返回到前面(在一个页面上将是少数这些翻转卡片，所以当点击第一个将是在“后退”，然后点击另一个和这两个卡片将在背面)。接下来的事情是我需要将所有点击的卡片返回到初始状态。

Answer 1

您可以添加一个用于保持卡片显示的类show，在box元素上添加onclick和，并相应地更改其余代码。

​

function focusCard(element) {
  element.getElementsByClassName("front")[0].classList.toggle("show");
  element.getElementsByClassName("back")[0].classList.toggle("show");
}

body {
  font-family: "Poppins", sans-serif;
}

#wrapper {
  display: flex;
  flex-direction: row;
}

.square {
  color: #e0e1dd;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 50px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}

.box {
  cursor: pointer;
  width: 300px;
  height: 200px;
  margin-bottom: 30px;
}

.center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.front {
  position: absolute;
  width: 300px;
  height: 200px;
  background-color: #778da9;
  transform: perspective(800px);
  backface-visibility: hidden;
  transition: all 0.5s;
  overflow: hidden;
  border-radius: 20px;
}

.box:hover .front,
.show {
  transform: rotateX(180deg);
}

.front::before {
  content: "";
  position: absolute;
  bottom: -25px;
  border-radius: 50%;
  background: #6e2626;
  width: 50px;
  height: 50px;
}

.back {
  position: absolute;
  width: 300px;
  height: 200px;
  background: #415a77;
  transform: perspective(800px) rotateY(0deg);
  backface-visibility: hidden;
  transition: all 0.5s;
  flex-direction: column;
  transform: rotateX(180deg);
  border-radius: 20px;
}

.box:hover .back,
.show {
  transform: rotateX(0deg);
}

.back p {
  margin: 10px 30px;
  font-size: 20px;
  text-align: center;
}

<div id="wrapper">
  <div class="square">
    <div class="box" onclick="focusCard(this)">
      <div class="front center">
        <h1>Front</h1>
      </div>
      <div class="back center">
        <p>Back</p>
      </div>
    </div>
  </div>
  <div class="square">
    <div class="box" onclick="focusCard(this)">
      <div class="front center">
        <h1>Front</h1>
      </div>
      <div class="back center">
        <p>Back</p>
      </div>
    </div>
  </div>
</div>

​