原文:https://segmentfault.com/q/1010000004605042

js

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function getScreenInfo()
{
var s = "";
s = " 网页可见区域宽:" document.body.clientWidth;
s = " 网页可见区域高:" document.body.clientHeight;
s = " 网页可见区域宽:" document.body.offsetWidth " (包括边线和滚动条的宽)";
s = " 网页可见区域高:" document.body.offsetHeight " (包括边线的宽)";
s = " 网页正文全文宽:" document.body.scrollWidth;
s = " 网页正文全文高:" document.body.scrollHeight;
s = " 网页被卷去的高(ff):" document.body.scrollTop;
s = " 网页被卷去的高(ie):" document.documentElement.scrollTop;
s = " 网页被卷去的左:" document.body.scrollLeft;
s = " 网页正文部分上:" window.screenTop;
s = " 网页正文部分左:" window.screenLeft;
s = " 屏幕分辨率的高:" window.screen.height;
s = " 屏幕分辨率的宽:" window.screen.width;
s = " 屏幕可用工作区高度:" window.screen.availHeight;
s = " 屏幕可用工作区宽度:" window.screen.availWidth;
s = " 你的屏幕设置是 " window.screen.colorDepth " 位彩色";
s = " 你的屏幕设置 " window.screen.deviceXDPI " 像素/英寸";
}

css判断

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/* 小屏幕(平板,大于等于 768px) */
@media (min-width: 768px) { ... }

/* 中等屏幕(桌面显示器,大于等于 992px) */
@media (min-width: 992px) { ... }

/* 大屏幕(大桌面显示器,大于等于 1200px) */
@media (min-width: 1200px) { ... }
03-16 10:07