我想问下JS手机端根据不同分辨率字体大小重定义怎么写
reset.js布局 用于手机端不同分辨率字体大小自适应
! function(x) { function w() { var a = r.getBoundingClientRect().width; a / v > 640 && (a = 640 * v), x.rem = a / 16, r.style.fontSize = x.rem + "px" } var v, u, t, s = x.document, r = s.documentElement, q = s.querySelector('meta[name="viewport"]'), p = s.querySelector('meta[name="flexible"]'); if (q) { console.warn("将根据已有的meta标签来设置缩放比例"); var o = q.getAttribute("content").match(/initial\-scale=(["']?)([\d\.]+)\1?/); o && (u = parseFloat(o[2]), v = parseInt(1 / u)) } else { if (p) { var o = p.getAttribute("content").match(/initial\-dpr=(["']?)([\d\.]+)\1?/); o && (v = parseFloat(o[2]), u = parseFloat((1 / v).toFixed(2))) } } if (!v && !u) { var n = (x.navigator.appVersion.match(/android/gi), x.navigator.appVersion.match(/iphone/gi)), v = x.devicePixelRatio; v = n ? v >= 3 ? 3 : v >= 2 ? 2 : 1 : 1, u = 1 / v } if (r.setAttribute("data-dpr", v), !q) { if (q = s.createElement_x("meta"), q.setAttribute("name", "viewport"), q.setAttribute("content", "initial-scale=" + u + ", maximum-scale=" + u + ", minimum-scale=" + u + ", user-scalable=no"), r.firstElementChild) { r.firstElementChild.appendChild(q) } else { var m = s.createElement_x("div"); m.appendChild(q), s.write(m.innerHTML) } } x.dpr = v, x.addEventListener("resize", function() { clearTimeout(t), t = setTimeout(w, 300) }, !1), x.addEventListener("pageshow", function(b) { b.persisted && (clearTimeout(t), t = setTimeout(w, 300)) }, !1), "complete" === s.readyState ? s.body.style.fontSize = 12 * v + "px" : s.addEventListener("DOMContentLoaded", function() { s.body.style.fontSize = 12 * v + "px" }, !1), w() }(window);