Element: clientTop property
The width of the top border of an element in pixels. It is a read-only, integer property of element.
As it happens, all that lies between the two locations (offsetTop
and
client area top) is the element's border. This is because the offsetTop
indicates the location of the top of the border (not the margin) while the client area
starts immediately below the border, (client area includes padding.) Therefore, the
clientTop value will always equal the integer portion of the
.getComputedStyle()
value for "border-top-width". (Actually might be
Math.round(parseFloat()).) For example, if the computed "border-top-width" is zero,
then clientTop
is also zero.
Note:
This property will round the value to an integer. If you
need a fractional value, use element.getBoundingClientRect()
.
Value
A number.
Examples
In the following example, the client area has a white background and a 24px black border-top
. The clientTop
value is the distance from where the margin (yellow) area ends and the padding and content areas (white) begin: that is, 24px.
HTML
<div id="container">
<div id="contained">
<p>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
commodo consequat.
</p>
</div>
</div>
CSS
#container {
margin: 3rem;
background-color: rgb(255 255 204);
border: 4px dashed black;
}
#contained {
margin: 1rem;
border-top: 24px black solid;
padding: 0px 28px;
overflow: auto;
background-color: white;
}
Result
Notes
clientTop
was first introduced in the MS IE DHTML object model.
Specifications
Specification |
---|
CSSOM View Module # dom-element-clienttop |
Browser compatibility
BCD tables only load in the browser