javascript - 用于更改所有 CSS 项目的 Javascript 函数

Question

是否有任何 javascript 函数可以在以下代码中将所有给定的 CSS 样式更改为其他 CSS 样式。看，我希望给定链接中的body, .container1,.button1和所有其他内容变成body.dark,container1.dark等等。

https://codepen.io/vkdatta27/pen/poyYapw

标签： javascripthtmljquerycssblogger

Answer 1

为什么不调整你的 css 以便你只改变一个？保持干净。

function toggleDark() {
  const body = document.querySelector('body');
  if (body.classList.contains('dark')) {
    body.classList.remove('dark');
  } else {
    body.classList.add('dark');
  }
}

document.querySelector('#darkmode').addEventListener('click', toggleDark);

body {
  background-color: #c0c0c0;
}

body.dark {
  background-color: #272727;
}

.container1 {
  width: fit;
  background-color: lightblue;
  height: fit;
  color: green;
}

body.dark .container1 {
  width: fit;
  background-color: yellow;
  height: fit;
  color: red;
}

.container2 {
  width: fit;
  background-color: black;
  height: fit;
  color: white;
}

body.dark .container2 {
  width: fit;
  background-color: white;
  height: fit;
  color: black;
}

.button1 {
  background-color: #c0c0c0;
  color: black;
  border-radius: 25px;
  border: 1px solid black
}

body.dark .button1 {
  background-color: #white;
  color: black;
  border-radius: 25px;
  border: 1px solid black
}

<div class="container1">Lorem ipsum dolor sit amet, consectetur adipiscing 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.</div><br />
<div class="container2">Lorem ipsum dolor sit amet, consectetur adipiscing 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.</div><br />
<button id="darkmode" class="button1"> Lights Off!!</button>