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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Listening for Events with addEventListener()

Kate C
Kate C
13,589 Points
Posted by Kate C
Kate C
13,589 Points

Why my listItems are not changing toUpperCase and toLowerCase?

Hello treehouse residents!

i might be blind, couldn't see what's wrong with my code here:

https://imgur.com/a/HuVUSK0 https://codepen.io/bookmonster/pen/VwvBKJd?editors=1010

Please help

2 Answers

Mohammad Azawi
Mohammad Azawi
Courses Plus Student 5,631 Points 
const listDiv = document.querySelector('.list');
//Getting elements by tag name it return html collection.
// in your code you just took the first element of index [0]
//const listItems = document.getElementsByTagName('li')[0];

const listItems = document.getElementsByTagName('li');
for (let i=0; i<listItems.length; i+=1){
  listItems[i].addEventListener ('mouseover', () => {
    listItems[i].textContent = listItems[i].textContent.toUpperCase();
  });
  listItems[i].addEventListener ('mouseout', () => {
    listItems[i].textContent = listItems[i].textContent.toLowerCase();
  });
}
Kate C
Kate C
13,589 Points
Kate C
Kate C
13,589 Points

Thank you so much Mohammad!

Mohammad Azawi
PLUS
Mohammad Azawi
Courses Plus Student 5,631 Points
Mohammad Azawi
Mohammad Azawi
Courses Plus Student 5,631 Points

You are welcome.

Keep it up :))