Javascript - if statement not working?

Question

I\'m trying to set a class to active depending on the url. I\'m trying to use the code below, but in every case, it activates the active class for the second tab.

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Answer 1

if(pathname = '/learn/subsection2') { // assignment
if(pathname == '/learn/subsection2') { // test for equality
if(pathname === '/learn/subsection2') { // test for equality without type coercion