Re-position element once its dimension is known

Jacky See

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Oct 20, 2016, 4:08:55 AM10/20/16

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I'm doing some dropdown UI where I would like to re-calculate position of the element once it appeared on screen.
Something like http://github.hubspot.com/drop/docs/welcome/

While I can get the triggering element position on click, I'm thinking how should get the offsetWidth/offsetHeight
of the dropdown once it is shown and feed it back to update again. Any idea?

Erkal Selman

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Oct 20, 2016, 9:04:42 AM10/20/16

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Instead of getting the position, why not putting the dropdown menu into the same div with its button?

Jacky

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Oct 20, 2016, 9:50:40 AM10/20/16

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You still need to do edge detection.

e.g. the dropdown is originally displayed below the button,

when the button is near the page bottom, the dropdown need to be above instead.

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