Fire an event listener only once.

Author: roeib

README.md

@@ -457,3 +457,22 @@ returns
 */
 
 ```
+
+
+#  Fire an event listener only once.
+```javascript
+const el = document.getElementById("btn");
+
+function myClickHandler(){
+  console.log('this click will only fire once')
+}
+
+
+el.addEventListener('click', myClickHandler, {
+  once: true,
+});
+
+```
+
+
+