Displaying the following:
Error: Cannot read property 'add' of undefined at HTMLAnchorElement.linkAction
const navigationLinks = document.querySelectorAll('.nav__link')
function handleLinkAction(){
// Activate link
navLinks.forEach(link => link.classList.remove('active'))
this.classlist.add('active')
// Hide mobile menu
const mobileMenu = document.getElementById('nav-menu')
mobileMenu.classList.remove('show')
}
Check out the solution provided below:
classList is case-sensitive:this.classlist.add('active'), it should be corrected to this.classList.add('active'). However, fixing this typo alone won't resolve the issue, refer to point 2 for more.linkAction():event as an argument when calling the function, which later helps in identifying the triggering element.Therefore, in your HTML:
onclick="linkAction(event)"function linkAction(event){ ... event.target.classList.add('active')}Here's a complete code snippet for reference: Click on "Run code snippet" button to view the outcome:
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