How to get night mode in vue

With the development of the Internet, more and more websites or applications provide the night mode function so that users can use it more comfortably at night or in dark light environments, and at the same time, it can save battery power. As a modern JavaScript framework, Vue.js also provides methods to implement night mode. This article will introduce you in detail how to implement night mode in Vue.

1. Preparation

Before starting, we need to download and install the v-toggle-theme plug-in in the Vue project. This plug-in is a lightweight tool to implement night mode. It is easy to use and does not require any configuration.

Install the plug-in as follows:

1. Switch to the root directory of the Vue project in the terminal
2. Execute the following command:

npm i v-toggle-theme --save

As shown in the picture:

3. After the installation is completed, we can see the v-toggle-theme plug-in in the "node_modules" directory of the project.

2. Implement night mode

Next, we will introduce in detail how to use the v-toggle-theme plug-in to implement the night mode function in the Vue project.

1. Introduce the v-toggle-theme plug-in into main.js.

import VToggleTheme from 'v-toggle-theme'
Vue.use(VToggleTheme)

2. Add the v-toggle-theme component in the App.vue component and set theme-related information.

<template>
  <div>
    <v-toggle-theme>
      <template>
        <div>
          <router-view></router-view>
        </div>
      </template>
    </v-toggle-theme>
  </div>
</template>

<script>
export default {
  name: &#39;App&#39;,
  data () {
    return {
      themeData: [{
        name: &#39;light&#39;,
        bg: &#39;#fff&#39;,
        color: &#39;#333&#39;,
        label: &#39;白天模式&#39;
      }, {
        name: &#39;dark&#39;,
        bg: &#39;#333&#39;,
        color: &#39;#fff&#39;,
        label: &#39;夜间模式&#39;
      }]
    }
  }
}
</script>

<style>
.theme {
  min-height: 100vh;
  padding: 20px;
  transition: background-color .3s, color .3s;
}
.theme.dark {
  background-color: #333;
  color: #fff;
}
</style>

In the above code, we used the v-toggle-theme component (used to switch themes) and added a slot to it. The slot can insert our own HTML code. Here we use the div tag that wraps the routing view as the inserted HTML code.

At the same time, we also set two values ​​​​for the theme data: {name: 'light', bg: '#fff', color: '#333', label: 'Day Mode'} and {name : 'dark', bg: '#333', color: '#fff', label: 'night mode'}. Among them, name is the theme name, bg is the background color, color is the text color, and label is the theme name, which will be displayed in the v-toggle-theme component.

Finally, we also set styles for the background color and text color in different modes.

3. Add night mode style to the style sheet.

.theme.dark {
  background-color: #333;
  color: #fff;
}

In the stylesheet, we added the background color and text color for night mode. We can easily implement night mode by adding the .dark class name on the v-toggle-theme component.

3. Summary

This article introduces in detail how to use the v-toggle-theme plug-in to implement night mode in Vue.js. I hope this article can be helpful to everyone.

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