Element: scrollWidth property
The Element.scrollWidth
read-only property is a
measurement of the width of an element's content, including content not visible on the
screen due to overflow.
The scrollWidth
value is equal to the minimum width the element would
require in order to fit all the content in the viewport without using a horizontal
scrollbar. The width is measured in the same way as clientWidth
: it includes the element's padding, but not its border, margin or
vertical scrollbar (if present). It can also include the width of pseudo-elements such
as ::before
or ::after
. If the element's content can fit
without a need for horizontal scrollbar, its scrollWidth
is equal to
clientWidth
Note: This property will round the value to an integer. If you need a fractional value,
use element.getBoundingClientRect()
.
Value
A number.
Examples
html
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="UTF-8" />
<title>Example</title>
<style>
div {
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
}
#aDiv {
width: 100px;
}
button {
margin-bottom: 2em;
}
</style>
</head>
<body>
<div id="aDiv">FooBar-FooBar-FooBar-FooBar</div>
<button id="aButton">Check for overflow</button>
<div id="anotherDiv">FooBar-FooBar-FooBar-FooBar</div>
<button id="anotherButton">Check for overflow</button>
</body>
<script>
const buttonOne = document.getElementById("aButton");
const buttonTwo = document.getElementById("anotherButton");
const divOne = document.getElementById("aDiv");
const divTwo = document.getElementById("anotherDiv");
//check to determine if an overflow is happening
function isOverflowing(element) {
return element.scrollWidth > element.offsetWidth;
}
function alertOverflow(element) {
if (isOverflowing(element)) {
alert("Contents are overflowing the container.");
} else {
alert("No overflows!");
}
}
buttonOne.addEventListener("click", () => {
alertOverflow(divOne);
});
buttonTwo.addEventListener("click", () => {
alertOverflow(divTwo);
});
</script>
</html>
Result
Specifications
Specification |
---|
CSSOM View Module # dom-element-scrollwidth |
Browser compatibility
BCD tables only load in the browser