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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction The Event Object

Posted by Amy Tomey
Amy Tomey
12,847 Points

please explain why the 'LI' has to be capitalized in the if statement?

listDiv.addEventListener('mouseover', (event) =>  {
  if (event.target.tagName == 'LI') {
    event.target.textContent = event.target.textContent.toUpperCase();;
  }
});

listDiv.addEventListener('mouseout', (event) =>  {
  if (event.target.tagName == 'LI') {
    event.target.textContent = event.target.textContent.toLowerCase();
  }
});

1 Answer

Brandon White
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Full Stack JavaScript Techdegree Graduate 34,660 Points

Hi Amy,

If you were to log the event.target.tagName to your console, the string that was logged would be all caps. That’s the reason why you use all caps when your checking in the if statement.