javascript - 使用混合混合模式的黑暗模式:差异不起作用

好的，所以我一直在尝试在我的网站上实现暗模式功能。我制作了一个显示在页面右下方的小部件。我将整个网站包含在一个名为test的div中。单击小部件后，它将切换并将类dark-mode-screen添加到test div中。

但是，只有文本和小部件的颜色会更改，而背景保持不变。

的CSS

        .box {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            border: 1px solid #333;
            padding: 10px 20px;
            font-family: sans-serif;
            mix-blend-mode: normal;
            transition: mix-blend-mode 0.7s ease-in;
        }

        .dark-button {
            position: absolute;
            right: 20px;
            bottom: 20px;
            border-radius: 50px;
            height: 60px;
            width: 60px;
            border: 1px solid steelblue;
            background: steelblue;
            outline: none;
        }

        .dark-mode-screen {
          width: 100vw;
          height: 100%;
          position: fixed;
          top: 0;
          left: 0;
          background: white;
          overflow-y: scroll;
        }

        .test {
            background: #fff;
            transition: all 0.7s ease-in;
        }

HTML：

    <div class="test">
    <div class="container" style="background: #fff; mix-blend-mode: difference;">

        <div class="box">
            <h3>My Paragraph</h3>
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
            tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
            quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
            consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
            cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
            proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
        </div>

        <button class="dark-button"></button>

    </div>
    </div>

JavaScript：

        const darkModeToggle = document.querySelector('.dark-button');
        darkModeToggle.onclick = function() {
            document.querySelector('.test').classList.toggle('dark-mode-screen');
        }

最佳答案

您可以将background-color CSS属性设置为白色mix-blend-mode不提供要减去的任何内容：

.box {
  ...
  background-color: white;
}

const darkModeToggle = document.querySelector('.dark-button');
darkModeToggle.onclick = function() {
  document.querySelector('.test').classList.toggle('dark-mode-screen');
}

.box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid #333;
  padding: 10px 20px;
  font-family: sans-serif;
  mix-blend-mode: normal;
  transition: mix-blend-mode 0.7s ease-in;
  background-color: white;
}

.dark-button {
  position: absolute;
  right: 20px;
  bottom: 20px;
  border-radius: 50px;
  height: 60px;
  width: 60px;
  border: 1px solid steelblue;
  background: steelblue;
  outline: none;
}

.dark-mode-screen {
  width: 100vw;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background: white;
  overflow-y: scroll;
}

.test {
  background: #fff;
  transition: all 0.7s ease-in;
}

<div class="test">
  <div class="container" style="background: #fff; mix-blend-mode: difference;">
    <div class="box">
      <h3>My Paragraph</h3>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure
        dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
    </div>
    <button class="dark-button"></button>
  </div>
</div>

关于javascript - 使用混合混合模式的黑暗模式:差异不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/58370476/