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 (
client area top) is the element's border. This is because the
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,
clientTop is also zero.
Note: This property will round the value to an integer. If you
need a fractional value, use
var top = element.clientTop;
In the following illustration, the client area is show in white. (The segments labeled "Top", "Right", etc. have no significance regarding the client area.) The clientTop value is the distance from where the margin (yellow) area ends and the padding and content areas (white) begin.
clientTop was first introduced in the MS IE DHTML object model.
|CSS Object Model (CSSOM) View Module
The definition of 'clientTop' in that specification.
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