Using JavaScript to trigger an action when the iframe or page is fully loaded by the user pressing

I am working on a webpage that includes an iframe, and I am trying to simulate a "return key" press when the page loads. I have heard that using the onload event should do the trick, but it doesn't seem to be working for me. I don't have much experience with JavaScript, so I would prefer to not use JQuery and stick to plain Javascript if possible.

Below is the code snippet I have tried, however, it isn't functioning as expected.

onload="alert('done!')";
function () {
  alert("trigger.Event('keydown', {keyCode: 13});");
}
<iframe src="https://URL_of_the_Iframe_server.js">

javascriptiframeonloadloaded

Answer №1

Here is an example of how to trigger an event using plain JavaScript.

let customEvent; // Custom event object

if (document.createEvent) {
  customEvent = document.createEvent("HTMLEvents");
  customEvent.initEvent("customEventName", true, true);
} else {
  customEvent = document.createEventObject();
  customEvent.eventType = "customEventName";
}

customEvent.eventName = "customEventName";

if (document.createEvent) {
  element.dispatchEvent(customEvent);
} else {
  element.fireEvent("on" + customEvent.eventType, customEvent);
}

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