全屏组件

<template>
  <div>
    <svg-icon :icon-class="isFullscreen?'exit-fullscreen':'fullscreen'" @click="click" />
  </div>
</template>

<script>
 //记得下依赖
import screenfull from 'screenfull'

export default {
  name: 'Screenfull',
  data() {
    return {
      isFullscreen: false
    }
  },
  mounted() {
    this.init()
  },
  beforeDestroy() {
    this.destroy()
  },
  methods: {
    click() {
      if (!screenfull.isEnabled) {
        this.$message({ message: '你的浏览器不支持全屏', type: 'warning' })
        return false
      }
      screenfull.toggle()
    },
    change() {
      this.isFullscreen = screenfull.isFullscreen
    },
    init() {
      if (screenfull.isEnabled) {
        screenfull.on('change', this.change)
      }
    },
    destroy() {
      if (screenfull.isEnabled) {
        screenfull.off('change', this.change)
      }
    }
  }
}
</script>

<style scoped>
.screenfull-svg {
  display: inline-block;
  cursor: pointer;
  fill: #5a5e66;;
  width: 20px;
  height: 20px;
  vertical-align: 10px;
}
</style>

使用方法

import Screenfull from "@/components/Screenfull";

 components: {
   Screenfull
  },

  <screenfull id="screenfull" class="right-menu-item hover-effect" />

fullscreen.svg
文件可放入 src/assets/icons/svg/fullscreen.svg

<svg width="128" height="128" xmlns="http://www.w3.org/2000/svg"><path d="M38.47 52L52 38.462l-23.648-23.67L43.209 0H.035L0 43.137l14.757-14.865L38.47 52zm74.773 47.726L89.526 76 76 89.536l23.648 23.672L84.795 128h43.174L128 84.863l-14.757 14.863zM89.538 52l23.668-23.648L128 43.207V.038L84.866 0 99.73 14.76 76 38.472 89.538 52zM38.46 76L14.792 99.651 0 84.794v43.173l43.137.033-14.865-14.757L52 89.53 38.46 76z"/></svg>