htmx:before:sse:stream ~ htmx

The htmx:before:sse:stream event fires before an SSE stream connection is opened.

When It Fires

Before htmx establishes the EventSource connection for Server-Sent Events.

Event Detail

ctx - Request context for the SSE stream

Example


htmx.on('htmx:before:sse:stream', (evt) => {
  console.log('Opening SSE stream to:', evt.detail.ctx.request.action);
  // Show streaming indicator
});

Cancel this event to prevent the stream from being opened.