var docEl = document.documentElement; function setRemUnit () { var isMobileFlag = isMobile() var rem = docEl.clientWidth / 19.2; // 可根据不同电脑分辨率进行手动修改（如1920*1080 为19.2 if(isMobileFlag){ rem = docEl.clientWidth / 7.5; } docEl.style.fontSize = rem + 'px' } setRemUnit() window.addEventListener('resize', setRemUnit) window.addEventListener('pageshow', function (e) { if (e.persisted) { setRemUnit() } }) function isMobile() { var userAgentInfo = navigator.userAgent; var mobileAgents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"]; var mobile_flag = false; //根据userAgent判断是否是手机 for (var v = 0; v < mobileAgents.length; v++) { if (userAgentInfo.indexOf(mobileAgents[v]) > 0) { mobile_flag = true; break; } } var screen_width = window.screen.width; var screen_height = window.screen.height; //根据屏幕分辨率判断是否是手机 if (screen_width > 325 && screen_height < 750) { mobile_flag = true; } return mobile_flag; }
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