如何使用javascript更改元素的offsetHeight？

Question

Hello i'm trying to change the offsetHeight of an element. i used the following

document.getElementById('id').style.offsetHeight = 0;

but i saw no visible change. Can anyone help me please?

Answer 1

The offsetHeight property indicates the height of the visible area for an element. It's a shorthand that contains the sum of dimensions from padding, scrollbars and borders.

However, it can't be used to change the actual size and as noted in comments, offsetHeight is a property of an element, not style.

To modify the actual size use height , padding or border .

Answer 2

您应该将style.height设置为以px结尾的字符串。

Answer 3

You should set style.height and remember to add the unit at the end like 'px' , in the case you get it from offsetHeight for example (well you know what unit you need). It's style and you have all the different units ('px','%','em', 'vh', ...etc). Here is an example:

myHeightInPx = 200;
DomElement.style.height = myHeightInPx + 'px';

Also to note is that offsetHeight return the height as a number, an integer. The unit is px. And if you get a value using it. you need always to add the unit 'px' when setting style.height, just like in above and the bellow example:

DomElement.style.height = AnotherDOMelment.offsetHeight() + 'px';