一、关于viewport设置
<meta id="device" name="viewport" content="width=device-width,initial-scale=1.0, maximum-scale=1.0,user-scalable=no">
二、关于不同设备rem大小的计算,以及动态设置像素缩放比
function setSize() {
var pixelRatio = 1 / window.devicePixelRatio;
$("#device").attr("content", "width=device-width,initial-scale=" + pixelRatio + ",maximum-scale=" + pixelRatio + "");
var html = document.getElementsByTagName("html")[0];
var pageWidth = html.getBoundingClientRect().width;
html.style.fontSize = pageWidth / 10 + "px";
}
三、koala将less转义为css的运用
设计稿宽度为:750px,与iphone6为整倍数关系,故选iphone6为调试设备。(选择调试设备时,最好选择与设计稿宽度成整倍数的设备)
setSize()中,html.style.fontSize=pageWidth/10+”px”,故设置less文件=》 @rem:设计稿宽度/10 rem=>@rem:75rem
@rem: 75rem; //公共样式
在写less样式时,尺寸: 按照psd图片尺寸大小/@rem 即可。例如:
.header {
position: absolute;
width: 100%;
height: 88/@rem;
background-color: #3399ea;
padding: 24/@rem 20/@rem 24/@rem 16/@rem;
box-sizing: border-box;
top: 0;
left: 0;
z-index: 100;
.house {
display: block;
width: 40/@rem;
height: 40/@rem;
background: url("../img/house.png") no-repeat center center;
background-size: 40/@rem 40/@rem;
float: left;
}
.logo {
float: left;
display: block;
width: 180/@rem;
height: 40/@rem;
margin-left: 225/@rem;
margin-right: 120/@rem;
background: url("../img/logo.png") no-repeat;
background-size: 180/@rem 40/@rem;
}
.tel {
float: right;
width: 140/@rem;
height: 40/@rem;
font-size: 20/@rem;
color: #ffffff;
}
}
附上经过koala转义过来的css对应代码
.header {
position: absolute;
width: 100%;
height: 1.17333333rem;
background-color: #3399ea;
padding: 0.32rem 0.26666667rem 0.32rem 0.21333333rem;
box-sizing: border-box;
top: 0;
left: 0;
z-index: 100;
}
.header .house {
display: block;
width: 0.53333333rem;
height: 0.53333333rem;
background: url("../img/house.png") no-repeat center center;
background-size: 0.53333333rem 0.53333333rem;
float: left;
}
.header .logo {
float: left;
display: block;
width: 2.4rem;
height: 0.53333333rem;
margin-left: 3rem;
margin-right: 1.6rem;
background: url("../img/logo.png") no-repeat;
background-size: 2.4rem 0.53333333rem;
}
.header .tel {
float: right;
width: 1.86666667rem;
height: 0.53333333rem;
font-size: 0.26666667rem;
color: #ffffff;
}
至于其他设备的适配问题,rem早已解决啦。
关于koala的用法,可自行百度哦。