blockquote:before, blockquote:after,
q:before, q:after {
content:'';
content:none;
}
a {
margin:0;
padding:0;
border:0;
font-size:100%;
vertical-align:baseline;
background:transparent;
}
ins {
background-color:#ff9;
color:#000;
text-decoration:none;
}
mark {
background-color:#ff9;
color:#000;
font-style:italic;
font-weight:bold;
}
del {
text-decoration: line-through;
}
abbr[title], dfn[title] {
border-bottom:1px dotted #000;
cursor:help;
}
table {
border-collapse:collapse;
border-spacing:0;
}
hr {
display:block;
height:1px;
border:0;
border-top:1px solid #cccccc;
margin:1em 0;
padding:0;
}
input, select {
vertical-align:middle;
}
1px边框像素问题： 手机像素都比较高 如果是2倍 3倍屏 虽然设置border:1px 实际上有 2px 3px
border.css 解决方案 使用css3 的 scale属性
main.js中导入border.css
import “./assets/styles/border.css”
border.css如下：
@charset "utf-8";
.border,
.border-top,
.border-right,
.border-bottom,
.border-left,
.border-topbottom,
.border-rightleft,
.border-topleft,
.border-rightbottom,
.border-topright,
.border-bottomleft {
position: relative;
}
.border::before,
.border-top::before,
.border-right::before,
.border-bottom::before,
.border-left::before,
.border-topbottom::before,
.border-topbottom::after,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::before,
.border-topleft::after,
.border-rightbottom::before,
.border-rightbottom::after,
.border-topright::before,
.border-topright::after,
.border-bottomleft::before,
.border-bottomleft::after {
content: "\0020";
overflow: hidden;
position: absolute;
}
/* border
-
因，边框是由伪元素区域遮盖在父级
-
故，子级若有交互，需要对子级设置
-
定位 及 z轴
*/
.border::before {
box-sizing: border-box;
top: 0;
left: 0;
height: 100%;
width: 100%;
border: 1px solid #eaeaea;
transform-origin: 0 0;
}
.border-top::before,
.border-bottom::before,
.border-topbottom::before,
.border-topbottom::after,
.border-topleft::before,
.border-rightbottom::after,
.border-topright::before,
.border-bottomleft::before {
left: 0;
width: 100%;
height: 1px;
}
.border-right::before,
.border-left::before,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::after,
.border-rightbottom::before,
.border-topright::after,
.border-bottomleft::after {
top: 0;
width: 1px;
height: 100%;
}
.border-top::before,
.border-topbottom::before,
.border-topleft::before,
.border-topright::before {
border-top: 1px solid #eaeaea;
transform-origin: 0 0;
}
.border-right::before,
.border-rightbottom::before,
.border-rightleft::before,
.border-topright::after {
border-right: 1px solid #eaeaea;
transform-origin: 100% 0;
}
.border-bottom::before,
.border-topbottom::after,
.border-rightbottom::after,
.border-bottomleft::before {
border-bottom: 1px solid #eaeaea;
transform-origin: 0 100%;
}
.border-left::before,
.border-topleft::after,
.border-rightleft::after,
.border-bottomleft::after {
border-left: 1px solid #eaeaea;
transform-origin: 0 0;
}
.border-top::before,
.border-topbottom::before,
.border-topleft::before,
.border-topright::before {
top: 0;
}
.border-right::before,
.border-rightleft::after,
.border-rightbottom::before,
.border-topright::after {
right: 0;
}
.border-bottom::before,
.border-topbottom::after,
.border-rightbottom::after,
.border-bottomleft::after {
bottom: 0;
}
.border-left::before,
.border-rightleft::before,
.border-topleft::after,
.border-bottomleft::before {
left: 0;
}
@media (max--moz-device-pixel-ratio: 1.49), (-webkit-max-device-pixel-ratio: 1.49), (max-device-pixel-ratio: 1.49), (max-resolution: 143dpi), (max-resolution: 1.49dppx) {
/* 默认值，无需重置 */
}
@media (min--moz-device-pixel-ratio: 1.5) and (max--moz-device-pixel-ratio: 2.49), (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 2.49), (min-device-pixel-ratio: 1.5) and (max-device-pixel-ratio: 2.49), (min-resolution: 144dpi) and (max-resolution: 239dpi), (min-resolution: 1.5dppx) and (max-resolution: 2.49dppx) {
.border::before {
width: 200%;
height: 200%;
transform: scale(.5);
}
.border-top::before,
.border-bottom::before,
.border-topbottom::before,
.border-topbottom::after,
.border-topleft::before,
.border-rightbottom::after,
.border-topright::before,
.border-bottomleft::before {
transform: scaleY(.5);
}
.border-right::before,
.border-left::before,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::after,
.border-rightbottom::before,
.border-topright::after,
.border-bottomleft::after {
transform: scaleX(.5);
}
}
@media (min--moz-device-pixel-ratio: 2.5), (-webkit-min-device-pixel-ratio: 2.5), (min-device-pixel-ratio: 2.5), (min-resolution: 240dpi), (min-resolution: 2.5dppx) {
.border::before {
width: 300%;
height: 300%;
transform: scale(.33333);
}
.border-top::before,
.border-bottom::before,
.border-topbottom::before,
.border-topbottom::after,
.border-topleft::before,
.border-rightbottom::after,
.border-topright::before,
.border-bottomleft::before {
transform: scaleY(.33333);
}
.border-right::before,
.border-left::before,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::after,
.border-rightbottom::before,
.border-topright::after,
.border-bottomleft::after {
transform: scaleX(.33333);
}
}
rem配置：1rem=100px;方便计算
main.js引入：
import rem from ‘./assets/js/rem’
rem();
export default function() {
// var devicePixelRatio = 1;
// var scale = 1 / devicePixelRatio;
// document.querySelector('meta[name="viewport"]').setAttribute('content','initial-scale=' + scale + ', maximum-scale=' + scale + ', minimum-scale=' + scale + ', user-scalable=no');
// 7.5根据设计稿的横向分辨率/100得来
function setRemUnit(){
//获取屏幕宽度
var deviceWidth = document.documentElement.clientWidth;
// 屏幕宽度 / 7.5 ? 方便计算。
// 1. ui给的设计图宽度一般：750px
// 2. 把屏幕宽度进行切割750份，每一份可以容纳设计稿1px的宽度。
//3. 浏览器最小能识别的font-size为12px, 所以*100
//4.html font-size ===100px 1rem==100px;
// 5.在计算的时候， 200px 就用2rem表示。
// if(deviceWidth > 750) {
// deviceWidth = 750;
// deviceWidth = 7.5 * 50;
// }
document.documentElement.style.fontSize = deviceWidth / 750 * 100+ 'px';
}
setRemUnit();
// reset rem unit on page resize
window.addEventListener('resize', setRemUnit)
window.addEventListener('pageshow', function (e) {
if (e.persisted) {
setRemUnit()
}
})
// 禁止双击放大
document.documentElement.addEventListener('touchstart', function (event) {
if (event.touches.length > 1) {
event.preventDefault();
}
}, false);
var lastTouchEnd = 0;
document.documentElement.addEventListener('touchend', function (event) {
var now = Date.now();
if (now - lastTouchEnd <= 300) {
event.preventDefault();
}
lastTouchEnd = now;
}, false);
}
300毫秒点击延迟问题：
借助插件 fastclick 完成，操作步骤如下：
cnpm i fastclick --save
全局引入 main.js中
import fastClick from "fastclick"
fastClick.attach(document.body)
css预处理器 sass
1、安装
npm install node-sass --save-dev
npm install sass-loader@7.3.1 --save-dev
2、配置
在build中的 webpack.base.conf.js 文件中，找到rules，添加
// 在 rules中添加
{
test: /.scss$/,
loaders: ['style', 'css', 'sass']
}
3、使用
在每个vue文件中的style，添加lang=“scss”
最后
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