I'm unable to inject a style with an “!important” rule

Question

I tried to inject a style using this code:

document.body.style.color=\'green!important\';

Per the CSS cascade ref, by applying the !i

Answer 1

Per the spec, if you want to set the priority, not just the value, you have to use setProperty, like so:

document.body.style.setProperty ("color", "green", "important");