The HTMLElement.offsetWidth read-only property returns the layout width of an element as an integer.
Typically, offsetWidth is a measurement in pixels of the element's CSS width, including any borders, padding, and vertical scrollbars (if rendered). It does not include the width of pseudo-elements such as ::before or ::after.
If the element is hidden (for example, by setting style.display on the element or one of its ancestors to "none"), then 0 is returned.
An integer corresponding to the offsetWidth pixel value of the element. The offsetWidth property is a read-only.
Note: This property will round the value to an integer. If you need a fractional value, use element.getBoundingClientRect().
| Specification |
|---|
| CSSOM View Module # dom-htmlelement-offsetwidth |
offsetWidth is a property of the DHTML object model which was first introduced by MSIE. It is sometimes referred to as an element's physical/graphical dimensions, or an element's border-box width.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
offsetWidth |
1 | 12 | 1 | 5.5 | 8 | 3 | 4.4 | 18 | 4 | 10.1 | 1 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetWidth