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snippets/js/s/trigger-event.md

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+---
+title: Trigger event on HTML element
+type: snippet
+language: javascript
+tags: [browser,event]
+cover: cloudy-mountaintop-2
+dateModified: 2020-10-22T20:24:44+03:00
+---
+
+Triggers a specific event on a given element, optionally passing custom data.
+
+- Use the `CustomEvent` constructor to create an event from the specified `eventType` and details.
+- Use `EventTarget.dispatchEvent()` to trigger the newly created event on the given element.
+- Omit the third argument, `detail`, if you do not want to pass custom data to the triggered event.
+
+```js
+const triggerEvent = (el, eventType, detail) =>
+  el.dispatchEvent(new CustomEvent(eventType, { detail }));
+```
+
+```js
+triggerEvent(document.getElementById('myId'), 'click');
+triggerEvent(document.getElementById('myId'), 'click', { username: 'bob' });
+```