check if there is a css rule

[Erik Blankinship]

Would be nice to have a function which, given a string, returns a boolean if there is a css rule or not for said string.

[Barney Carroll]

jss(selector).get() returns an empty object if there are no rules applied, so you could use underscore.js as follows:

_.isEmpty(jss(selector).get());

But the jss API doesn't really need this, does it? What's the use case?

[Erik Blankinship]

thank you for pointing that out regarding empty objects.

my use case is needing to know what background, if any was currently in effect in a css rule.

much thanks.

[Barney Carroll]

jss only reads rules it's implemented itself, but you'd basically be lookin at jss(selector).get() && jss(selector).background