screenfull.js实现全屏功能基于vue项目中运用

在很多时候项目都需要全屏：就会使用到全屏插件---screenfull.js

1. 我的项目基于vue的，直接开始文档(https://www.npmjs.com/package/screenfull)，先npm，现在最版是5.0.0

$ npm install --save screenfull

2. 直接上代码：
   在需要的页面引入

import screenfull from "screenfull";

<template>
  <div class="hello">
    <el-button type="primary" class="button" @click="setScreenfull">全屏开启</el-button>
  </div>
</template>

<script>
import screenfull from "screenfull";
export default {
  name: "HelloWorld",
  data() {
    return {
      // isFullscreen: false
    };
  },
  methods: {
    setScreenfull() {
      if (!screenfull.isEnabled) {
        // 如果不允许进入全屏，发出不允许提示
        this.$message({
          message: "暂不不支持全屏",
          type: "warning"
        });
        return false;
      }
      screenfull.toggle();
      this.$message({
        message: "全屏开启",
        type: "success"
      });
    }
  }
};
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1,
h2 {
  font-weight: normal;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>

3. 注意事项，判断是否全屏可用 screenfull.isEnabled