js获取电脑及浏览器缩放比例
文章目录
前言
function detectZoom() {
let ratio = 0
const screen = window.screen
const 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
},
好用哦~~~