code: function initBrowserSize() {
        if (this.isScrollNotUseSpace === undefined) {
          return;
        }
  
        if (this.isScrollNotUseSpace === true) {
          this.browserHSize = 0;
          this.browserVSize = 0;
        } else {
          // 获取当前浏览器滚动条的宽高
          this.browserHSize = this.$refs.container.offsetWidth - this.$refs.container.clientWidth;
          // 横向滚动的高度
          this.browserVSize = this.$refs.container.offsetHeight - this.$refs.container.clientHeight;
        }
      }
docs: 初始化，获取浏览器滚动条的大小