js实现复制功能

const { nickName, userName, password } = this.userInfo;
      let textarea = document.createElement("textarea");
      textarea.value = ` 姓名: ${nickName}\n 账号: ${userName}\n 密码: ${password} `;
      document.body.appendChild(textarea);
      textarea.select();
      let actions = document.execCommand("Copy");
      document.body.removeChild(textarea);
      if (actions) {
        this.$message.success("复制成功");
      } else {
        this.$message.error("复制失败");
      }