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Event Delegation in JavaScript Explained

  • When interacting with a web page, the browser creates an event object to describe the action and sends it to the code.
  • Event delegation in JavaScript relies on the structure of the DOM, the Document Object Model.
  • Events in the browser follow a journey: top-down, target, and then up again.
  • Event listeners in the capturing phase can be set with the third argument as true.
  • Event delegation involves setting up a single listener on a parent element to handle events from its children.
  • Delegation simplifies handling multiple dynamically generated elements without the need for individual listeners.
  • Delegation allows for efficient event handling on elements that may not be present on the page initially.
  • Using closest in event delegation allows for flexibility in handling events on nested elements.
  • Delegation works with various events that bubble up through the DOM, such as input, change, and keyup.
  • Event delegation offers control over which elements trigger specific actions, based on event target attributes.

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