zoukankan      html  css  js  c++  java
  • JS 获取浏览器显示比例,缩放比例

    function getDetectZoom (){ 
      let 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;
    };
  • 相关阅读:
    Got05
    Git07
    Git09
    Git11
    Git10
    Git13
    Git12
    Git14
    Listview点击跳转页面
    《三个和尚》观后感
  • 原文地址:https://www.cnblogs.com/weblff/p/14145124.html
Copyright © 2011-2022 走看看