Element.clientLeft - Web APIs 编辑

The width of the left border of an element in pixels. It includes the width of the vertical scrollbar if the text direction of the element is right–to–left and if there is an overflow causing a left vertical scrollbar to be rendered. clientLeft does not include the left margin or the left padding. clientLeft is read-only.

When layout.scrollbar.side preference is set to 1 or to 3 and when the text-direction is set to RTL, then the vertical scrollbar is positioned on the left and this impacts the way clientLeft is computed.

Note: This property will round the value to an integer. If you need a fractional value, use element.getBoundingClientRect(). 

Note: When an element has display: inline, clientLeft returns 0 regardless of the element's border.

Syntax

var left = element.clientLeft;

Example

padding-top

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.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

padding-bottom

Specifications

Browser compatibility

BCD tables only load in the browser

Notes

clientLeft was first introduced in the MS IE DHTML object model.

The position of the vertical scrollbar in right–to–left text direction set on the element will depend on the layout.scrollbar.side preference

Gecko-based applications support clientLeft starting with Gecko 1.9 (Firefox 3, implemented in bug 111207). This property is not supported in Firefox 2 and earlier.