The ontoggle event in HTML DOM occurs when the <details> element user opens or closes by the user. The <details> tag is used for the content/information which is initially hidden but could be displayed if the user wishes to see it.
Supported tags
<details>
Syntax:
<element ontoggle="Script">
object.ontoggle = function(){Script};
- In JavaScript, using the addEventListener() method:
object.addEventListener("toggle", Script);
Example:
html
<!DOCTYPE html>
< html >
< head >
< title >HTML DOM ontoggle Event</ title >
</ head >
< body >
< center >
< h1 style = "color:green" >GeeksforGeeks</ h1 >
< h2 >HTML DOM ontoggle Event</ h2 >
< details id = "detailsID" >
< summary >Show details</ summary >
< p >
5th Floor, A-118,
Sector-136, Noida, Uttar Pradesh - 201305
feedback@geeksforgeeks.org
</ p >
</ details >
</ center >
< script >
document.getElementById(
"detailsID").addEventListener("toggle", GFGfun);
function GFGfun() {
alert("ontoggle");
}
</ script >
</ body >
</ html >
|
Output:
Before:

After:


Supported Browsers: The browsers supported by DOM ontoggle Event are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Apple Safari
- Opera
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Last Updated :
27 Jul, 2021
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