Examples

Interactive demos with real iframes. Inspect message flow, connection state, and response timing in the always-visible DevTools panel below each example.

BroadcastChannel

Interactive

Parent page and child iframe communicating via BroadcastChannel. Same mechanism that works across separate browser tabs — no direct window reference needed.

same-origincross-framerequest/response

postMessage

Interactive

Parent page and child iframe communicating via window.postMessage. Point-to-point: the parent holds a direct reference to the iframe's contentWindow.

point-to-pointcross-frameIframeBridgeHost