What is an event delegation
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Event delegation is a technique for listening to events where you delegate a parent element as the listener for all of the events that happen inside it.
For example, if you wanted to detect field changes inside a specific form, you can use event delegation technique,
var form = document.querySelector(“#registration-form”);
// Listen for changes to fields inside the form
form.addEventListener(
“input”,
function (event) {
// Log the field that was changed
console.log(event.target);
},
false
);