> 在前端的面试中经常被问到 请写出一个两边固定中间自适应的方法实现
> 废话不多说直接上代码
> 首先写好默认样式
```javascript
html *{
padding: 0;
margin: 0;
}
.layout article div{
min-height: 100px;
}
```
###### 利用float浮动实现 ######
```javascript
<!--浮动布局 -->
<section class="layout float">
<style media="screen">
.layout.float .left{
float:left;
width:300px;
background: red;
}
.layout.float .center{
background: yellow;
}
.layout.float .right{
float:right;
width:300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-right-center">
<div class="left"></div>
<div class="right"></div>
<div class="center">
<h2>浮动解决方案</h2>
1.这是三栏布局的浮动解决方案;
2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案;
4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案;
6.这是三栏布局的浮动解决方案;
</div>
</article>
</section>
```
###### 使用相对定位实现 ######
```javascript
<section class="layout absolute">
<style>
.layout.absolute .left-center-right>div{
position: absolute;
}
.layout.absolute .left{
left:0;
width: 300px;
background: red;
}
.layout.absolute .center{
left: 300px;
right: 300px;
background: yellow;
}
.layout.absolute .right{
right:0;
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>绝对定位解决方案</h2>
1.这是三栏布局的浮动解决方案;
2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案;
4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案;
6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
```
###### 利用flexbox实现 ######
```javascript
<!-- flexbox布局 -->
<section class="layout flexbox">
<style>
.layout.flexbox{
margin-top: 110px;
}
.layout.flexbox .left-center-right{
display: flex;
}
.layout.flexbox .left{
width: 300px;
background: red;
}
.layout.flexbox .center{
flex:1;
background: yellow;
}
.layout.flexbox .right{
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>flexbox解决方案</h2>
1.这是三栏布局的浮动解决方案;
2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案;
4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案;
6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
```
###### 利用display:table实现 #####
```javascript
<!-- 表格布局 -->
<section class="layout table">
<style>
.layout.table .left-center-right{
width:100%;
height: 100px;
display: table;
}
.layout.table .left-center-right>div{
display: table-cell;
}
.layout.table .left{
width: 300px;
background: red;
}
.layout.table .center{
background: yellow;
}
.layout.table .right{
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>表格布局解决方案</h2>
1.这是三栏布局的浮动解决方案;
2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案;
4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案;
6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
```
###### 利用css3 display:grid实现(网格布局) #####
```javascript
<!-- 网格布局 -->
<section class="layout grid">
<style>
.layout.grid .left-center-right{
width:100%;
display: grid;
grid-template-rows: 100px;
grid-template-columns: 300px auto 300px;
}
.layout.grid .left-center-right>div{
}
.layout.grid .left{
width: 300px;
background: red;
}
.layout.grid .center{
background: yellow;
}
.layout.grid .right{
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>网格布局解决方案</h2>
1.这是三栏布局的浮动解决方案;
2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案;
4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案;
6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
```
* 以上是我所了解接触到的最常见的方法及实现有其他方案可以在评论区提供哦