問(wèn)題描述

用手機(jī)瀏覽器訪(fǎng)問(wèn)京東 域名是http://m.jd.com用電腦訪(fǎng)問(wèn)的是http://www.jd.com，當(dāng)然兩個(gè)頁(yè)面也不一樣，請(qǐng)問(wèn)這個(gè)是怎么實(shí)現(xiàn)的？方便的話(huà)寫(xiě)個(gè)實(shí)例代碼，謝謝！

問(wèn)題解答

進(jìn)入www.jd.com后代碼判斷是手機(jī)的話(huà)就跳轉(zhuǎn)m.jd.com

let ua = window.navigator.userAgent.toLocaleLowerCase()let murl ='//m.jd.com',let reg =/iphone|android|symbianos|windowssphone/gif (reg .test(ua )) { window.location.href = murl }

京東源碼：

!function(n){function o(n){for(var o=n+'=',t=document.cookie.split(';'),e=0;e<t.length;e++){for(var i=t[e];' '==i.charAt(0);)i=i.substring(1,i.length);if(0==i.indexOf(o))return i.substring(o.length,i.length)}return null}var t=o('pcm'),e=n.navigator.userAgent.toLocaleLowerCase(),i='//m.jd.com',r=/iphone|android|symbianos|windowssphone/g,c=/micromessenger|qq/[d.]+/i;return c.test(e)?(n.location.!=t?(n.location.href=i,!1):void 0}(window);回答2：

判斷下UA就好了

request.getHeader('user-agent')

userAgent

window.navigator.userAgent