Browser Events | BCTRL | Documentation

Runtime-backed event listeners and event waiting patterns.

Support Matrix

Capability	Playwright	Puppeteer	Stagehand
`page.waitForEvent`	Yes	Yes	Yes
`page.on`	Yes	Yes	Yes
`page.once`	Yes	Yes	Yes
`page.off`	Yes	Yes	Yes
`context.on`	Yes
`context.once`	Yes
`context.off`	Yes
`context.waitForEvent`	Yes

page.waitForEvent - Wait for the next matching page event from the runtime event stream.
page.on - Subscribe to page events through the runtime event bridge.
page.once - Subscribe to the next matching page event exactly once.
page.off - Remove a local page event listener.
context.on - Subscribe to browser-context events through the runtime event bridge.
context.once - Subscribe to the next matching browser-context event exactly once.
context.off - Remove a local browser-context event listener.
context.waitForEvent - Wait for the next matching browser-context event.