3 commits

Author	SHA1	Message	Date
Sam Atkins	bc0ef5f69d	LibWeb: Implement CSS.supports(string) function :^) ... Websites being able to query whether we support a given CSS feature should prevent them from loading unnecessary polyfills for things we already support! Or at least, that's the nice theory. :^)	2021-10-08 23:02:57 +02:00
Sam Atkins	2b67f87629	LibWeb: Implement 2-argument version of CSS.supports() ... This version takes a property name and value as separate parameters.	2021-10-08 23:02:57 +02:00
Sam Atkins	575ce04148	LibWeb: Add CSS.escape() JS function ... This is the `CSS` namespace defined in IDL here: https://www.w3.org/TR/cssom-1/#namespacedef-css , not to be confused with our `Web::CSS` namespace. Words are hard. `CSS.escape()` lets you escape identifiers that can then be used to create a CSS string. I've also stubbed out the `CSS.supports()` function.	2021-10-08 23:02:57 +02:00