获取当前页面的缩放值

最新推荐文章于 2022-11-28 17:34:40 发布

原创最新推荐文章于 2022-11-28 17:34:40 发布 · 436 阅读

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 //获取当前页面的缩放值
      detectZoom() {
        var ratio = 0,
          screen = window.screen,
          ua = navigator.userAgent.toLowerCase();

        if (window.devicePixelRatio !== undefined) {
          ratio = window.devicePixelRatio;
        } else if (~ua.indexOf('msie')) {
          if (screen.deviceXDPI && screen.logicalXDPI) {
            ratio = screen.deviceXDPI / screen.logicalXDPI;
          }
        } else if (window.outerWidth !== undefined && window.innerWidth !== undefined) {
          ratio = window.outerWidth / window.innerWidth;
        }

        if (ratio) {
          ratio = Math.round(ratio * 100);
        }

      
        return ratio;
      },