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Lära Challenge: Handle Event Propagation and Delegation | Event Handling and User Interactions in JavaScript
Advanced JavaScript Mastery

bookChallenge: Handle Event Propagation and Delegation

Task

You're building a dynamic list where users can add and delete specific items.

  1. Use event delegation by adding a single click event listener to the ul with ID dynamic-list;
  2. When an item is clicked:
    • If the clicked element is an <li>, show an alert with the text of the clicked item;
    • If the clicked element is a "Delete" button, remove the corresponding <li> item from the list.
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  • Use event.target.tagName === 'LI' to check if the clicked element is an <li>;
  • Use event.target.classList.contains('delete-btn') to check if the clicked element is a "Delete" button.
index.html

index.html

index.css

index.css

index.js

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Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 5

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bookChallenge: Handle Event Propagation and Delegation

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Task

You're building a dynamic list where users can add and delete specific items.

  1. Use event delegation by adding a single click event listener to the ul with ID dynamic-list;
  2. When an item is clicked:
    • If the clicked element is an <li>, show an alert with the text of the clicked item;
    • If the clicked element is a "Delete" button, remove the corresponding <li> item from the list.
index.html

index.html

index.css

index.css

index.js

index.js

copy
  • Use event.target.tagName === 'LI' to check if the clicked element is an <li>;
  • Use event.target.classList.contains('delete-btn') to check if the clicked element is a "Delete" button.
index.html

index.html

index.css

index.css

index.js

index.js

copy

Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 5
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