2020-02-27
2729
#css
Idorenyin Obong
14833
Feb 27, 2020 ⋅ 9 min read

How to use CSS variables like a pro

Idorenyin Obong Software engineer with a flair for writing.

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2 Replies to "How to use CSS variables like a pro"

  1. I strangely couldn’t retrieve the value from documentElement via getPropertyValue, as it was not set on that element. Setting the value via javascript to black works fine, and then retrieval works and comes back as black. (I had one variable definition in css under :root in header style definitions – red, and one value set on the html element itself via chrome devtools – black)
    Instead using getComputedStyle worked okay as it supports the pseudo selector as second argument and I was able to retrieve the original css value of red, or any overloaded value as appropriate.

    window.getComputedStyle(window.document.documentElement,”:root”).getPropertyValue(‘–joy-colour’)

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