When someone interacts with a webpage, the browser sends events to the relevant JavaScript code. The afterprint event happens when the browser leaves its print flow.
When afterprint happens
The browser leaves its print flow.
You can listen for it using addEventListener(). That keeps event handling separate from HTML attributes such as onclick and works well with modern code organization.
A small working example
<p>Try the relevant browser action described below.</p>
<p id="event-status" role="status">Waiting for afterprint...</p>
<script>
const eventTarget = window;
const eventStatus = document.getElementById("event-status");
if (eventTarget) {
eventTarget.addEventListener("afterprint", (eventDetails) => {
eventStatus.textContent = "afterprint event received";
console.log(eventDetails.type, eventDetails.target);
});
}
</script>
Reading the code
The browser listens for afterprint on the relevant target. When the event occurs, the callback receives eventDetails, updates the status message and logs the event name and target in Developer Tools.
Open Print, then close the dialog or finish printing; browser print behavior varies.
Some events need a specific browser condition, another tab or window, or a Web Component to reproduce. Read the trigger steps carefully before deciding that an event handler is not working.
Try it in your browser
Open the page, show the Console panel, and follow this test: Open Print, then close the dialog or finish printing; browser print behavior varies. Then change one thing in the example and observe whether the event still fires.
Common Beginner Mistakes
- Expecting
afterprintto fire without its required user action or browser condition. - Open Print, then close the dialog or finish printing; browser print behavior varies.
- Adding repeated event listeners without considering cleanup or unwanted side effects.
Key Takeaways
afterprintreports the browser leaves its print flow.addEventListener("afterprint", ...)listens for the event on the appropriate target.- Open Print, then close the dialog or finish printing; browser print behavior varies.