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var w = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth; var h = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight; 如果你需要给某个div设置全屏的话，可以用下面的jQuery来获取设备高度，然后赋值给类。 $(window).load(function () { var maxHeight = 0; if (document.documentElement.clientHeight > maxHeight) { maxHeight = document.documentElement.clientHeight; } $('.you-class').css("height", maxHeight) }); |