js随机生成背景

<template>
  <div
        :style="{ 'background-image': 'url(' + bgimg + ')' }"
        class="page"
      >
       页面
   </div>
</template>
 
<script>
export default {
  data() {
    return {
      bgimg:'@img/bg.png'
      bgimgArr:[
            '    @img/bg1.png',
                '@img/bg2.png',
                '@img/bg3.png',
                '@img/bg4.png',
                '@img/bg5.png'
      ]
    };
  },
  mounted() {
   this.bgimg =this.bgimgArr[Math.floor(Math.random() * this.bgimgArr.length)];
  },
};
</script>
<style lang="scss" scoped>
 .page {
    height: 100vh;
    background-size: cover;
    background-repeat: no-repeat;
    padding-top: 48px;
  }
</style>