1. DOMContentLoaded

    JavaScript event that fires when the DOM is loaded, but before all page assets are loaded (CSS, images, etc.).

  2. document api: `domcontentloaded` event

  3. performancenavigationtiming api: domcontentloadedeventend

  4. performancenavigationtiming api: domcontentloadedeventstart

  5. performancetiming api: domcontentloadedeventend

  6. performancetiming api: domcontentloadedeventstart

  7. window api: `domcontentloaded` event