# Pulse opacity

**URL:** <https://forum.kirupa.com/t/pulse-opacity/285516>\
**Category:** Uncategorized\
**Created:** [April 1, 2009, 7:48pm UTC](https://forum.kirupa.com/t/pulse-opacity/285516 "2009-04-01T19:48:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![lebonbon](https://avatars.discourse-cdn.com/v4/letter/l/eada6e/32.png) [@lebonbon](https://forum.kirupa.com/u/lebonbon)\
**Post date:** [April 1, 2009, 7:48pm UTC](https://forum.kirupa.com/t/pulse-opacity/285516/1 "2009-04-01T19:48:30Z")

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could someone point me in the right direction of how to pulse the opacity property.

Math.sin on something and offset and scale the wave to run from 0-1 ?

cant get my head around it though (syntax). any tips or ideas most welcome.

thx