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Check if an element has CSS overflow

Written byPhuoc Nguyen
15 Dec, 2023
CSS overflow, getComputedStyle
JavaScript version
const hasCssOverflow = (ele) => ["auto", "scroll"].includes(window.getComputedStyle(ele)["overflow"]);
TypeScript version
const hasCssOverflow = (ele: HTMLElement) => ["auto", "scroll"].includes(window.getComputedStyle(ele)["overflow"]);
The `hasCssOverflow` function checks if an HTML element has CSS overflow. First, it gets the element's computed styles using `window.getComputedStyle`. This method returns an object with all the CSS properties applied to the element.
Next, we check the `overflow` property of this object and see if it's either `auto` or `scroll`. If it is, we know the element has CSS overflow and return `true`.
If neither of these values is present in the `overflow` property, we know there's no CSS overflow on the element and return `false`.

See also

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