vue里实现模板下载的功能

<el-button size="mini" type="success" @click="downloadFile">下载模板</el-button>

　　

// 下载模板
      downloadFile() {
        let url = '后台提供给你下载模板的接口'
        let blob = new Blob([url], {
          type: 'application/vnd.ms-excel'
        })
        let requestUrl = URL.createObjectURL(blob)
        let link = document.createElement('a')
        let fileName = '模板' + '.xlsx'
        document.body.appendChild(link);
        link.href = requestUrl
        link.dowmload = fileName
        link.click();
        link.remove();
      },