element全屏功能

element中顶部导航全屏功能
第一步：安装：

在命令行中执行：npm install --save screenfull   （注：因为这是生产依赖，所以执行--save）

第二部封装公共组件(element-admin套)

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

<script>
import screenfull from 'screenfull'

export default {
  name: 'Screenfull',
  data() {
    return {
      isFullscreen: false
    }
  },
  mounted() {
    this.init()
  },
  beforeDestroy() {
    this.destroy()
  },
  methods: {
    click() {
      if (!screenfull.enabled) {
        this.$message({
          message: 'you browser can not work',
          type: 'warning'
        })
        return false
      }
      screenfull.toggle()
    },
    change() {
      this.isFullscreen = screenfull.isFullscreen
    },
    init() {
      if (screenfull.enabled) {
        screenfull.on('change', this.change)
      }
    },
    destroy() {
      if (screenfull.enabled) {
        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>

通用套

<template>
    <el-button type="primary" class="button" @click="buttoncli">摁我全屏</el-button>
</template>
 
<script>
    import screenfull from 'screenfull'
//  全屏功能使用:1.安装,npm install --save screenfull
//           2.引入
//           3.点击时判断浏览器是否可全屏,不可全屏给提示,可全屏执行screenfull.toggle()
    export default{
        data(){
            return{
                isFullscreen: false
            }
        },
        methods:{
            buttoncli(){
                if (!screenfull.enabled) { // 如果不允许进入全屏，发出不允许提示
                this.$message({
                  message: '不支持全屏',
                  type: 'warning'
                })
                return false
             }
              screenfull.toggle()
              this.$message({
                  message: '全屏啦',
                  type: 'success'
                })
            }
        }
    }
</script>

第三步，在需要的地方引入组件即可