Tutorials References Exercises Bootcamps Videos Menu
Sign Up Create Website Get Certified Upgrade

HTML ontoggle Attribute

Definition and Usage

The ontoggle attribute fires when the user opens or closes a <details> element.

The <details> element specifies additional details that the user can view or hide on demand.

Applies to

The ontoggle attribute is part of the Event Attributes, and can be used on the following element:

Elements Event
<details> ontoggle


Execute a JavaScript when a <details> element is opened or closed:

<details ontoggle="myFunction()">
Try it Yourself »

Browser Support

The numbers in the table specify the first browser version that fully supports the event attribute.

Event Attribute
ontoggle 12.0  Not supported Not supported 6.0 15.0