no-muse
/
musescore-downloader
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

perf: improve scroll performance 

https://developers.google.com/web/updates/2016/06/passive-event-listeners
This commit is contained in:
Xmader 2021-01-07 01:57:13 -05:00
parent 20704eba75
commit d9d09c4e8f
No known key found for this signature in database
GPG Key ID: A20B97FB9EB730E4
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/btn.ts
View File

@ -140,14 +140,14 @@ export class BtnList {
const anchorDiv = this.getBtnParent()
const pos = () => this._positionBtns(anchorDiv, newParent)
pos()
document.addEventListener('readystatechange', pos)
document.addEventListener('readystatechange', pos, { passive: true })
// reposition btns when window resizes
window.addEventListener('resize', pos)
window.addEventListener('resize', pos, { passive: true })
// reposition btns when scrolling
const scroll = getScrollParent(anchorDiv)
scroll.addEventListener('scroll', pos)
scroll.addEventListener('scroll', pos, { passive: true })
} catch (err) {
console.error(err)
}