HTMLElement: load event

{{APIRef("HTML DOM")}}

The load event fires for elements containing a resource when the resource has successfully loaded. Currently, the list of supported HTML elements are: {{HTMLElement("body")}} , {{HTMLElement("embed")}} , {{HTMLElement("iframe")}} , {{HTMLElement("img")}} , {{HTMLElement("link")}} , {{HTMLElement("object")}} , {{HTMLElement("script")}} , {{HTMLElement("style")}} , and {{HTMLElement("track")}} .

[!NOTE] The load event on {{domxref("HTMLBodyElement#event_handlers", "HTMLBodyElement")}} is actually an alias for the {{domxref("Window/load_event", "window.onload")}} event. Therefore, the load event will only fire on the <body> element once all of the document’s resources have loaded or errored. However, for the sake of clarity, it is recommended that the event handler is attached to the window object directly rather than on HTMLBodyElement.

This event is not cancelable and does not bubble.

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}} , or set an event handler property.

addEventListener("load", (event) => { })

onload = (event) => { }

Event type

A generic {{domxref("Event")}} .

Examples

This example prints to the screen whenever the {{HtmlElement("img")}} element successfully loads its resource.

HTML

<img
  id="image"
  src="/shared-assets/images/examples/favicon144.png"
  alt="MDN logo"
  width="72" />
<div><button>Reload</button></div>

JavaScript

const image = document.getElementById("image");
image.onload = () => {
  document.body.appendChild(document.createElement("div")).textContent =
    "loaded!";
};

document.querySelector("button").addEventListener("click", reload);

function reload() {
  image.src = "/shared-assets/images/examples/favicon144.png";
}

Result

{{EmbedLiveSample("Example", "100%", "200")}}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

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