New on the web platform in July: Firefox 153 and Chrome 151
Rachel Andrew summarizes July's stable releases, and one item outweighs the rest: Firefox 153 widened how the select element is parsed, so any nested element is allowed inside it. That opens the path to genuinely customizable dropdowns without a JavaScript replacement, which is the most troublesome category of hand-built component on client sites. The same release brings the Picture-in-Picture API to desktop, the Intl.Locale Info API with getCalendars(), getTimeZones(), and getWeekInfo(), and IndexedDB getAllRecords(). Chrome 151 adds the CSS ruby-overhang property, manual slot assignment in declarative Shadow DOM through the shadowrootslotassignment attribute, and the animation property on the AnimationEvent and TransitionEvent interfaces.
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