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JavaScript Interacting with the DOM Traversing the DOM Traversing up the DOM with parentNode

Posted by Ivonne Benites
Ivonne Benites
6,044 Points

Why do we use the word BUTTON in capitalized letters? if(event.target.tagName === 'BUTTON')

taskList.addEventListener('mouseover', (event) => { if(event.target.tagName === 'BUTTON'){ } })

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

HTML tag names are always upper case internally as required by the W3C specifications, so the string must also be upper case to match.

Ivonne Benites
Ivonne Benites
6,044 Points
Ivonne Benites
Ivonne Benites
6,044 Points

Hello Steven, Thank you so much for the explanation, I appreciate it