如何在全高应用程序中结合使用 flexbox 和垂直滚动? [英] How can I combine flexbox and vertical scroll in a full-height app?

问题描述

我想使用使用 flexbox 的全高应用程序.我在此链接中使用旧的 flexbox 布局模块(display: box; 和其他东西)找到​​了我想要的东西:CSS3 Flexbox 全高应用程序和溢出

I want to use a full-height app using flexbox. I found what I want using old flexbox layout module (display: box; and other things) in this link: CSS3 Flexbox full-height app and overflow

对于只支持旧版 flexbox CSS 属性的浏览器来说，这是一个正确的解决方案.

This is a correct solution for browsers that only support the old version of the flexbox CSS properties.

如果我想尝试使用较新的 flexbox 属性，我将尝试使用作为 hack 列出的同一链接中的第二个解决方案:使用 height: 0px; 的容器.它可以显示垂直滚动.

If I want to try using the newer flexbox properties, I'll try to use the second solution in the same link listed as a hack: using a container with height: 0px;. It makes to show a vertical scroll.

我不太喜欢它，因为它会引入其他问题，而且它更像是一种变通方法而不是解决方案.

I don't like it a lot because it introduces other problems and it is more a workaround than a solution.

html, body {
    height: 100%;    
}
#container {
	display: flex;
	flex-direction: column;
	height: 100%;
}
#container article {
	flex: 1 1 auto;
	overflow-y: scroll;
}
#container header {
    background-color: gray;
}
#container footer {
    background-color: gray;
}

<section id="container" >
    <header id="header" >This is a header</header>
    <article id="content" >
        This is the content that
        <br />
        With a lot of lines.
        <br />
        With a lot of lines.
        <br />
        This is the content that
        <br />
        With a lot of lines.
        <br />
        <br />
        This is the content that
        <br />
        With a lot of lines.
        <br />
        <br />
        This is the content that
        <br />
        With a lot of lines.
        <br />
    </article>
    <footer id="footer" >This is a footer</footer>
</section>

我还准备了一个带有基本示例的 JSFiddle:http://jsfiddle.net/ch7n6/

I have prepared a JSFiddle as well with a base example: http://jsfiddle.net/ch7n6/

这是一个全高的 HTML 网站，由于内容元素的 flexbox 属性，页脚位于底部.我建议你在 CSS 代码和结果之间移动栏来模拟不同的高度.

It is a full-height HTML website and the footer is at the bottom because of the flexbox properties of the content element. I suggest you move the bar between CSS code and result to simulate different height.

推荐答案

感谢 https://stackoverflow.com/users/1652962/cimmanon 给了我答案.

解决方案是为垂直可滚动元素设置高度.例如:

The solution is setting a height to the vertical scrollable element. For example:

#container article {
    flex: 1 1 auto;
    overflow-y: auto;
    height: 0px;
}

元素将有高度，因为除非你想要一个min-height，否则flexbox会重新计算它，所以你可以使用height: 100px;完全一样:min-height: 100px;

The element will have height because flexbox recalculates it unless you want a min-height so you can use height: 100px; that it is exactly the same as: min-height: 100px;

#container article {
    flex: 1 1 auto;
    overflow-y: auto;
    height: 100px; /* == min-height: 100px*/
}

因此，如果您想在垂直滚动中使用 min-height，那么最好的解决方案是:

So the best solution if you want a min-height in the vertical scroll:

#container article {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 100px;
}

如果您只是想要完全垂直滚动以防没有足够的空间来查看文章:

If you just want full vertical scroll in case there is no enough space to see the article:

#container article {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 0px;
}

最终代码:http://jsfiddle.net/ch7n6/867/

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