如何实现单击一个div让这个div的背景颜色从粉色切换成蓝色 再次单击div切换回粉色？希望主要通过js来实现

就是通过单击来实现蓝色和粉色背景色来回切换
我的部分代码如下：

html
<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单击切换颜色</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
        }

        .qiehuan {
            height: 5rem;
            width: 5rem;
            margin: 0 auto;
            margin-top: 10rem;
            text-align: center;
            line-height: 5rem;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div class="qiehuan">
        芜湖~
    </div>
</body>
</html>

img

你题目的解答代码如下：

html
<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单击切换颜色</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
        }
 
        .qiehuan {
            height: 5rem;
            width: 5rem;
            margin: 0 auto;
            margin-top: 10rem;
            text-align: center;
            line-height: 5rem;
            background-color: pink;  
        }
    </style>
</head>
<body>
    <div class="qiehuan">
        芜湖~
    </div>
<script type="text/javascript">
document.querySelector(".qiehuan").onclick = function () {
    if (this.style.backgroundColor!=="blue") {
        this.style.backgroundColor="blue";
    } else {
        this.style.backgroundColor="pink";
    }
}
</script>
</body>
</html>

如有帮助，请点击我的回答下方的【采纳该答案】按钮帮忙采纳下，谢谢!

img

通过点击事件切换类名，来修改元素对应样式


<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单击切换颜色</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
        }
 
        .qiehuan {
            height: 5rem;
            width: 5rem;
            margin: 0 auto;
            margin-top: 10rem;
            text-align: center;
            line-height: 5rem;
            
        }
        .pink{
          background-color: pink;
        }
        .blue {
          background-color: blue;
        }
    </style>
</head>
<body>
    <div class="qiehuan pink">
        芜湖~
    </div>
    <script>
      let box = document.querySelector('.qiehuan')
      box.onclick = function(){
        box.classList.toggle('pink')
        box.classList.toggle('blue')
      }
    </script>
</body>
</html>
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