解决笔记本屏幕显示缩放比例125% 150%对页面布局的影响

出现问题的原因： device-pixel-ratio

解决方式一：

/**
 * @author huangjf
 * @description 校正windows页面在系统进行缩放后导致页面被放大的问题，通常放大比例是125%、150%
 * **/

class DevicePixelRatio {
    constructor() {
        //this.flag = false;
    }
    //获取系统类型
    _getSystem() {
        let flag = false;
        var agent = navigator.userAgent.toLowerCase();
        //      var isMac = /macintosh|mac os x/i.test(navigator.userAgent);
        //      if(isMac) {
        //          return false;
        //      }
        //现只针对windows处理，其它系统暂无该情况，如有，继续在此添加
        if(agent.indexOf("windows") >= 0) {
            return true;
        }
    }
    //获取页面缩放比例
    //  _getDevicePixelRatio() {
    //      let t = this;
    //  }
    //监听方法兼容写法
    _addHandler(element, type, handler) {
        if(element.addEventListener) {
            element.addEventListener(type, handler, false);
        } else if(element.attachEvent) {
            element.attachEvent("on" + type, handler);
        } else {
            element["on" + type] = handler;
        }
    }
    //校正浏览器缩放比例
    _correct() {
        let t = this;
        //页面devicePixelRatio（设备像素比例）变化后，计算页面body标签zoom修改其大小，来抵消devicePixelRatio带来的变化。
        document.getElementsByTagName('body')[0].style.zoom = 1 / window.devicePixelRatio;
    }
    //监听页面缩放
    _watch() {
        let t = this;
        t._addHandler(window, 'resize', function() { //注意这个方法是解决全局有两个window.resize
            //重新校正
            t._correct()
        })
    }
    //初始化页面比例
    init() {
        let t = this;
        if(t._getSystem()) { //判断设备，目前只在windows系统下校正浏览器缩放比例
            //初始化页面校正浏览器缩放比例
            t._correct();
            //开启监听页面缩放
            t._watch();
        }
    }
}
export default DevicePixelRatio;

使用：

new DevicePixelRatio().init();

解决方式二：

export const detectZoom = () => {
  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;
};

使用：

 created() {
    const m = detectZoom();
    document.body.style.zoom = 110 / Number(m);
  },

解决方式三：

@media all
and (-moz-min-device-pixel-ratio: 1.09) and (-moz-max-device-pixel-ratio: 1.18),
    (-webkit-min-device-pixel-ratio: 1.09) and (-webkit-max-device-pixel-ratio: 1.18),
    (min-resolution: 1.09dppx) and (max-resolution: 1.18dppx) {
    :root {
        font-size: 14px;
    }
}
@media all
and (-moz-min-device-pixel-ratio: 1.19) and (-moz-max-device-pixel-ratio: 1.28),
    (-webkit-min-device-pixel-ratio: 1.19) and (-webkit-max-device-pixel-ratio: 1.28),
    (min-resolution: 1.19dppx) and (max-resolution: 1.28dppx) {
    :root {
        font-size: 13px;
    }
}
@media all
and (-moz-min-device-pixel-ratio: 1.29) and (-moz-max-device-pixel-ratio: 1.4),
    (-webkit-min-device-pixel-ratio: 1.29) and (-webkit-max-device-pixel-ratio: 1.4),
    (min-resolution: 1.29dppx) and (max-resolution: 1.4dppx) {
    :root {
        font-size: 12px;
    }
}
@media all
and (-moz-min-device-pixel-ratio: 1.41) and (-moz-max-device-pixel-ratio: 1.6),
    (-webkit-min-device-pixel-ratio: 1.41) and (-webkit-max-device-pixel-ratio: 1.6),
    (min-resolution: 1.41dppx) and (max-resolution: 1.6dppx) {
    :root {
        font-size: 10px;
    }
}
@media all
and (-moz-min-device-pixel-ratio: 1.61) and (-moz-max-device-pixel-ratio: 1.8),
    (-webkit-min-device-pixel-ratio: 1.61) and (-webkit-max-device-pixel-ratio: 1.8),
    (min-resolution: 1.61dppx) and (max-resolution: 1.8dppx) {
    :root {
        font-size: 9px;
    }
}
@media all
and (-moz-min-device-pixel-ratio: 1.81) and (-moz-max-device-pixel-ratio: 2.1),
    (-webkit-min-device-pixel-ratio: 1.81) and (-webkit-max-device-pixel-ratio: 2.1),
    (min-resolution: 1.81dppx) and (max-resolution: 2.1dppx) {
    :root {
        font-size: 8px;
    }
}