This commit is contained in:
Angelos Chalaris
2017-12-14 13:17:20 +02:00
parent 7de373b34f
commit 1e0f46cb6c
2 changed files with 8 additions and 8 deletions

View File

@ -1,7 +1,7 @@
### Element is visible in viewport
Use `Element.getBoundingClientRect()` and the `window.inner(Width|Height)` values
to determine if a given element is visible in the viewport.
Use `Element.getBoundingClientRect()` and the `window.inner(Width|Height)` values
to determine if a given element is visible in the viewport.
Omit the second argument to determine if the element is entirely visible, or specify `true` to determine if
it is partially visible.
@ -14,6 +14,6 @@ const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
: top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
}
// e.g. 100x100 viewport and a 10x10px element at position {top: -1, left: 0, bottom: 9, right: 10}
// elementIsInViewport(el) -> false (not fully visible)
// elementIsInViewport(el, true) -> true (partially visible)
// elementIsVisibleInViewport(el) -> false (not fully visible)
// elementIsVisibleInViewport(el, true) -> true (partially visible)
```