移動端rem切圖

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1.為什麼用rem

根據螢幕大小，自動調整大小

2.如何使用rem

分以下幾步

a.用ps把設定稿弄成640px或者750px的（記得等比例縮放）

b.調試時記得把瀏覽器預設最小字型設定為最小。手機端是支援12px以下的字型的

c.引入meta頭

    <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no,minimal-ui">

d.引入reset檔案

?

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html, body, div, span, applet, object, iframe,h1, h2, h3, h4, h5, h6, p, blockquote, pre,a, abbr, acronym, address, big, cite, code,del, dfn, em, img, ins, kbd, q, s, samp,small, strike, strong, sub, sup, tt, var,b, u, i, center,dl, dt, dd, ol, ul, li,fieldset, form, label, legend,table, caption, tbody, tfoot, thead, tr, th, td,button,article, aside, canvas, details, embed, figure,figcaption, footer, header, hgroup, menu, nav,output, ruby, section, summary, time, mark,audio, video {margin: 0;padding: 0;border: 0;vertical-align: baseline;background: transparent;outline: none;-webkit-box-sizing: border-box;-moz-box-sizing: border-box;box-sizing: border-box;}article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; }ol, ul { list-style: none; }button{background: transparent;}blockquote, q { quotes: none; }blockquote:before, blockquote:after, q:before, q:after { content: ‘‘; content: none; }strong { font-weight: bold; }table { border-collapse: collapse; border-spacing: 0; }img { border: 0; max-width: 100%; }html{line-height: initial;}body{font-size: 0.32rem;}

　　

e.引入js媒體查詢檔案

?

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(function(doc, win) {var docEl = doc.documentElement,resizeEvt = ‘orientationchange‘ in window ? ‘orientationchange‘ : ‘resize‘,recalc = function() {var clientWidth = docEl.clientWidth;if (!clientWidth) return;if (clientWidth >= 750) {docEl.style.fontSize = ‘100px‘;} else {docEl.style.fontSize = 100 * (clientWidth / 750) + ‘px‘;}};if (!doc.addEventListener) return;win.addEventListener(resizeEvt, recalc, false);doc.addEventListener(‘DOMContentLoaded‘, recalc, false);})(document, window);

　　

f.直接在750px或640px的情況下切圖，單位也直接用px

g.到http://www.520ued.com/把px轉為rem,html的字型大小填100px。

H.收工！！

 

 

參考資料:

http://www.520ued.com/

http://bbs.it-home.org/thread-64920-1-1.html

移動端rem切圖