使用display：flex填充剩余的垂直空间-Java 学习之路

123

在3行布局中：

顶行应根据其内容确定大小
底行应具有固定的高度（以像素为单位）
中间行应该展开以填充容器

问题是，当主要内容扩展时，它会删除页眉和页脚行：

Flexing Bad

HTML:

<section>
  <header>
    header: sized to content
    <br>(but is it really?)
  </header>
  <div>
    main content: fills remaining space<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    <!-- uncomment to see it break - ->
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    <!-- -->
  </div>
  <footer>
    footer: fixed height in px
  </footer>
</section>

CSS:

section {
  display: flex;
  flex-flow: column;
  align-items: stretch;
  height: 300px;
}
header {
  flex: 0 1 auto;
  background: tomato;
}
div {
  flex: 1 1 auto;
  background: gold;
  overflow: auto;
}
footer {
  flex: 0 1 60px;
  background: lightgreen;
  /* fixes the footer: min-height: 60px; */
}

Fiddle:

http://jsfiddle.net/7yLFL/1/（工作，内容很少）
http://jsfiddle.net/7yLFL/（破碎，内容较大）

我很幸运，我可以使用CSS中最新最好的，无视旧版浏览器 . 我以为我可以使用flex布局来最终摆脱旧的基于表格的布局 . 出于某种原因，它没有做我想要的......

为了记录，关于“填充剩余高度”的SO有很多相关的问题，但没有解决我正在使用flex的问题 . 参考文献：

3 回答

简单说明： DEMO

section {
  display: flex;
  flex-flow: column;
  height: 300px;
}
header {
  background: tomato;
/* no flex rules, it will grow */
}
div {
  flex: 1;/* 1 and it will fill whole space left if no flex value are set to other children*/
  background: gold;
  overflow: auto;
}
footer {
  background: lightgreen;
  min-height: 60px; /* min-height has its purpose :) , unless you meant height*/
}

回复于 2024-05-08T00:38:48+08:00

173

如果展开的中心组件的内容超出其边界，则下面的示例包括滚动行为 . 此外，中心组件占据视口中剩余空间的100％ .

jsfiddle here

html, body, .r_flex_container{
    height: 100%;
    display: flex;
    flex-direction: column;
    background: red;
    margin: 0;
}
.r_flex_container {
    display:flex;
    flex-flow: column nowrap;
    background-color:blue;
}

.r_flex_fixed_child {
    flex:none;
    background-color:black;
    color:white;

}
.r_flex_expand_child {
    flex:auto;
    background-color:yellow;
    overflow-y:scroll;
}

可用于演示此行为的html示例

<html>
<body>
    <div class="r_flex_container">
      <div class="r_flex_fixed_child">
        <p> This is the fixed 'header' child of the flex container </p>
      </div>
      <div class="r_flex_expand_child">
            <article>this child container expands to use all of the space given to it -  but could be shared with other expanding childs in which case they would get equal space after the fixed container space is allocated. 
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,
            </article>
      </div>
      <div class="r_flex_fixed_child">
        this is the fixed footer child of the flex container
        asdfadsf
        <p> another line</p>
      </div>

    </div>
</body>
</html>

回复于 2024-05-08T00:38:48+08:00

更现代的方法是使用网格属性 .

section {
  display: grid;
  align-items: stretch;
  height: 300px;
  grid-template-rows: min-content auto 60px;
}
header {
  background: tomato;
}
div {
  background: gold;
  overflow: auto;
}
footer {
  background: lightgreen;
}

<section>
  <header>
    header: sized to content
    <br>(but is it really?)
  </header>
  <div>
    main content: fills remaining space<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    
  </div>
  <footer>
    footer: fixed height in px
  </footer>
</section>

回复于 2024-05-08T00:38:48+08:00

使用display：flex填充剩余的垂直空间

3 回答

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