How to specify table's height such that a vertical scroll bar appears?

问题

I have a table with many rows on my page. I would like to set table's height, say for 500px, such that if the height of the table is bigger than that, a vertical scroll bar will appear. I tried to use CSS height attribute on the table, but it doesn't work.

回答1:

Try using the overflow CSS property. There are also separate properties to define the behaviour of just horizontal overflow (overflow-x) and vertical overflow (overflow-y).

Since you only want the vertical scroll, try this:

table {
  height: 500px;
  overflow-y: scroll;
}

EDIT:

Apparently <table> elements don't respect the overflow property. This appears to be because <table> elements are not rendered as display: block by default (they actually have their own display type). You can force the overflow property to work by setting the <table> element to be a block type:

table {
  display: block;
  height: 500px;
  overflow-y: scroll;
}

Note that this will cause the element to have 100% width, so if you don't want it to take up the entire horizontal width of the page, you need to specify an explicit width for the element as well.

回答2:

You need to wrap the table inside another element and set the height of that element. Example with inline css:

<div style="height: 500px; overflow: auto;">
 <table>
 </table>
</div>

回答3:

to set the height of table, you need to first set css property "display: block" then you can add "width/height" properties. I find this Mozilla Article a very good resource to learn how to style tables : Link

来源：https://stackoverflow.com/questions/4457274/how-to-specify-tables-height-such-that-a-vertical-scroll-bar-appears

标签

css

css-tables