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grid 网格布局,用来解决简单的二维页面布局.
和 flex 类似的是,分为外层容器 (Grid Container) 和内层子项目(Items).
Container 属性:
- display
- grid-template-columns
- grid-template-rows
- grid-template-areas
- grid-template
- grid-column-gap
- grid-row-gap
- grid-gap
- justify-items
- align-items
- place-items
- justify-content
- align-content
- place-content
- grid-auto-columns
- grid-auto-rows
- grid-auto-flow
- grid
Items 属性:
- grid-column-start
- grid-column-end
- grid-row-start
- grid-row-end
- grid-column
- grid-row
- grid-area
- justify-self
- align-self
- place-self
应用
外层申明 dipslay:grid | inline-grid
生成的网格是块级还是内联级的。
<style>
.grid{display:grid;}
</style>
属性:grid-template-columns,grid-template-rows
<div class="grid">
<div class="child-1">1</div>
<div class="child-2">2</div>
<div class="child-3">3</div>
<div class="child-4">4</div>
<div class="child-5">5</div>
<div class="child-6">6</div>
<div class="child-7">7</div>
<div class="child-8">8</div>
<div class="child-9">9</div>
</div>
<style>
.grid{
grid-template-rows: 10vw 10vw 10vw;
grid-template-columns:10vw 10vw 10vw;
// 能够应用 repeat('反复次数','长度单位'), 下面的 style 代码能够写成
//grid-template-rows: repeat(3,10vw);
//grid-template-columns: repeat(3,10vw);
}
</style>
rows 行 colnums 列, 下面代码示意 3 行每行高度 10vw,3 列每列宽度 10vw。
关键字:repeat()
<style>
.grid{grid-template-rows: repeat(1,3vw 6vw 9vw);
grid-template-columns: repeat(1,3vw 6vw 9vw);
}
</style>
关键字:auto-fit
<style>
.grid{
width: 400px;
height:300px
display: grid;
grid-template-columns:repeat(auto-fit,70px);
grid-template-rows: repeat(auto-fit, 70px);
}
</style>
容器尺寸固定,子项目尺寸固定,网格几行几列未知,自适生成网格.
行 Math.floor(400/70)=5;
列 Math.floor(300/70)=4;
右侧多 50,底部多 20.
关键字:fr
.grid{
width: 500px;
grid-template-columns:100px 1fr 2fr;
// 左侧 100px 固定,右侧随屏幕自适应,一句搞定
//grid-template-columns:100px 1fr;
}
拿第一行举例
网格 1 =100px
网格 2 =(500-100)/3 (133.33)
网格 3 =(500-100)/3*2 (266.66)
先去除固定值,在调配残余空间
关键字:minmax(min,max)
.grid{
width: 50vw;
display: grid;
grid-template-columns:100px 1fr 2fr minmax(50px,4fr);
}
范畴取值最小 50px, 个别状况下都是 4fr
关键字:auto
<div class="grid">
<div class="child-1"> 固定 200</div>
<div class="child-2"> 自适应 </div>
</div>
.grid{
display: grid;
width: 100%;
grid-template-columns:200px auto;
grid-template-rows: 20vh;
.child-1{background-color: rosybrown;}
.child-2{background-color: saddlebrown;}
}
等同于:grid-template-columns:200px 1fr;
也能够:grid-template-columns: minmax(200px ,0.5fr) 2fr;
属性:grid-gap,grid-row-gap,grid-colnums-gap
.grid{
display: grid;
grid-template-columns:300px 200px;
grid-template-rows: 200px 200px;
grid-row-gap: 30px;
grid-column-gap: 10px;
// 等同于 grid-gap: 30px 10px;
}
chrome 控制台调试高深莫测
留神: 如容器宽度 500px 则右侧会超出 10px;
属性:grid-template-areas,grid-area
<div class="grid">
<div class="child-1">1</div>
<div class="child-2">2</div>
<div class="child-3">3</div>
<div class="child-4">4</div>
</div>
.grid-9{
display: grid;
grid-template-columns:100px 100px 100px;
grid-template-rows: 100px 100px 100px 100px;
grid-template-areas:'. header header'
'left main main'
'left main main'
'bottom bottom bottom';
.child-1{grid-area:header,}
.child-2{grid-area:left,}
.child-3{grid-area:main,}
.child-4{grid-area:bottom,}
}
网格可视化, 应用 ’.’ 能够空开网格
应用 grid-area 定义别名, 可视化布局应用别名,网格合并后的数量需与 dom 数量一样,以下布局会出错.
'. header header'
'left main left'
'main left main'
'bottom bottom bottom';
'. header header'
'left main left'
'left main left'
'bottom bottom bottom';
属性:grid-auto-flow
.grid{
display: grid;
grid-template-columns:repeat(2,10vw);
grid-template-rows: repeat(2,10vw);
grid-auto-flow:column;
}
默认横向排列.
属性:place-items,justify-items,align-items
属性:justify-self,align-self,place-self
.grid-11{
display: grid;
grid-template-columns:repeat(2,10vw);
grid-template-rows: repeat(2,10vw);
// justify-items:center;
// align-items:center;
place-items:center center;
div{
width: 5vw;
line-height: 5vw;
}
.child-1{justify-self: end;}
.child-2{align-self: end;}
.child-3{place-self: end;}
}
xxx-self 单个,xxx-items 所有.
属性:justify-content,align-content,place-content
.grid{
display: grid;
height: 500px;
grid-template-columns: repeat(2, 10vw);
grid-template-rows: repeat(2, 10vw);
place-content: space-around;
// 等同于
//justify-content:space-around;
//align-content:space-around;
}
横向垂直居中对齐.
属性:grid-auto-rows,grid-auto-columns
.grid{
display: grid;
grid-template-columns:repeat(2,10vw);
grid-template-rows: repeat(2,10vw);
grid-auto-flow:column;
grid-auto-rows: 5vw;
grid-auto-columns: 5vw;
}
有 6 个 div, 网格只设置 2 行 2 列 4 个 (2*2)
多余的 2 个网格的大小指定应用 grid-auto-rows,grid-auto-columns
因为上图应用了竖排序,grid-auto-rows: 5vw; 没成果
属性:grid-column-start grid-column-end
属性:grid-row-start grid-row-end
<div class="grid">
<div class="child-1">1</div>
<div class="child-2">2</div>
</div>
.grid{
display: grid;
grid-template-rows: repeat(4,10vw);
grid-template-columns: repeat(4,10vw);
.child-1{
grid-row-start: 2;
grid-row-end: 4;
grid-column-start: 1;
grid-column-end: 3;
}
.child-2{
grid-row-start: 3;
grid-row-end: 5;
grid-column-start: 3;
grid-column-end: 5;
}
}
实用于子项目布局开始与完结
数字对应的是线的地位(1 开始),4 个网格就是 4+ 1 根线如图所示.
<div class="grid">
<div class="child-1">1</div>
<div class="child-2">2</div>
<div class="child-3">3</div>
<div class="child-4">4</div>
<div class="child-6">6</div>
<div class="child-7">7</div>
<div class="child-8">8</div>
<div class="child-9">9</div>
</div>
.grid{
display: grid;
grid-template-rows: repeat(3,10vw);
grid-template-columns: repeat(3,10vw);
.child-6{
grid-row-start: 2;
grid-row-end: 3;
grid-column-start: 1;
grid-column-end: 3;
}
}