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JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM A Simple Example

Abhijit Das
Abhijit Das
5,022 Points
Posted by Abhijit Das
Abhijit Das
5,022 Points

why the heading element color isn't changing on mouse click?

Hello, I am trying to change all heading color at once. When I am using document.addEventListener handle heading colors are changing, however by using variable name the heading color isn't changing. Pls let me know why it's happening? can't we use event handler on array object? code is here : https://codepen.io/anon/pen/pwwKzE

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! You can only add an event listener to one item at a time. But you're trying to add an event listener to an array of elements. Now you could put an event listener on the document or you could select a specific element to put that event listener on. I chose the document as the element. Whenever you click anywhere on the document it changes the color of the text.

Here's what I did:

const headingTwo = document.getElementsByTagName('h2');
document.addEventListener ('click',() => {
  for(i = 0; i < headingTwo.length; i++) {
  headingTwo[i].style.color = "olive";
  }
})

Hope this helps! :sparkles:

Abhijit Das
Abhijit Das
5,022 Points
Abhijit Das
Abhijit Das
5,022 Points

Thank you Jennifer, yes i understand it. Later i modified the code little bit as follow below. Where if i click on the first heading all heading color will be changed.

const headingTwo = document.getElementsByTagName('h2');
headingTwo[0].addEventListener ('click',() => {
  for(i = 0; i < headingTwo.length; i++) {
  headingTwo[i].style.color = "olive";
  }
})