Does your browser snap too soon?

Testing…

Demo

Scroll this slider:

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And see how (or if) this slider slides along with it:

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In some browsers, setting scrollLeft computes the position of the snap destination instead of the value you defined. For example, if each slide is 400px and you set slider.scrollLeft = 200px it will scroll to 400px instead of 200px.

Screencasts

How to Fix

In browsers that snap immediately (e.g., Chrome), you’ll need to disable CSS Scroll Snap on the synced slider: scroll-snap-type: none;

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.snaps-immediately .your-class {
	scroll-snap-type: none;
}

Note : Keep Scroll Snap enabled for the primary slider. Only disable the synced slider, because that’s the one affected by the “snap immediately” bug.

Browser Support (as of 2019-10-01)

IE
âť“ Untested
Edge
âť“ Untested
Firefox
⚠️ 68+ Snaps immediately
Chrome
⚠️ 69+ Snaps immediately
Safari
âś… 11+
Opera
⚠️ Snaps immediately
iOS Safari
âś… 11+
Android Browser
âť“ Untested
Chrome for Android
⚠️ 76+ Snaps immediately

References