flex布局示例（骰子的布局）

简介

骰子的一面，最多可以放置9个点。

img

下面，就来看看Flex如何实现，从1个点到9个点的布局

如果不加说明，本节的HTML模板一律如下。

<div class="box">
  <span class="item"></span>
</div>

上面代码中，div元素（代表骰子的一个面）是Flex容器，span元素（代表一个点）是Flex项目。如果有多个项目，就要添加多个span元素，以此类推。

单项目

首先，只有左上角1个点的情况。Flex布局默认就是首行左对齐，所以一行代码就够了。

img

.box {
  display: flex;
}

设置项目的对齐方式，就能实现居中对齐和右对齐。

img

.box {
  display: flex;
  justify-content: center;
}

img

.box {
  display: flex;
  justify-content: flex-end;
}

设置交叉轴对齐方式，可以垂直移动主轴。

img

.box {
  display: flex;
  align-items: center;
}

bg2015071305

.box {
  display: flex;
  justify-content: center;
  align-items: center;
}

img

.box {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

img

.box {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
}

双项目

img

.box {
  display: flex;
  justify-content: space-between;
}

img

.box {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

img

.box {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

img

.box {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
}

img

.box {
  display: flex;
}

.item:nth-child(2) {
  align-self: center;
}

img

.box {
  display: flex;
  justify-content: space-between;
}

.item:nth-child(2) {
  align-self: flex-end;
}

三项目

img

.box {
  display: flex;
}

.item:nth-child(2) {
  align-self: center;
}

.item:nth-child(3) {
  align-self: flex-end;
}

四项目

img

.box {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-content: space-between;
}

img

HTML代码如下。

<div class="box">
  <div class="column">
    <span class="item"></span>
    <span class="item"></span>
  </div>
  <div class="column">
    <span class="item"></span>
    <span class="item"></span>
  </div>
</div>

CSS代码如下。

.box {
  display: flex;
  flex-wrap: wrap;
  align-content: space-between;
}

.column {
  flex-basis: 100%;
  display: flex;
  justify-content: space-between;
}

六项目

img

.box {
  display: flex;
  flex-wrap: wrap;
  align-content: space-between;
}

img

.box {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-content: space-between;
}

img

HTML代码如下。

<div class="box">
  <div class="row">
    <span class="item"></span>
    <span class="item"></span>
    <span class="item"></span>
  </div>
  <div class="row">
    <span class="item"></span>
  </div>
  <div class="row">
     <span class="item"></span>
     <span class="item"></span>
  </div>
</div>

CSS代码如下。

.box {
  display: flex;
  flex-wrap: wrap;
}

.row{
  flex-basis: 100%;
  display:flex;
}

.row:nth-child(2){
  justify-content: center;
}

.row:nth-child(3){
  justify-content: space-between;
}

九项目

img

.box {
  display: flex;
  flex-wrap: wrap;
}

参考文章

Flex 布局教程：实例篇