Stop Writing $(‘.class’) Over and Over: Why You Should Use a Constant Instead
When you’re just starting out with jQuery or JavaScript in general, it’s common to write code quickly without thinking too much about performance or cleanliness. One of the most common mistakes beginners make is calling the same selector multiple times like this: $('.button').addClass('active'); $('.button').text('Clicked!'); $('.button').css('color', 'red'); At first glance, this works just fine—so why worry? The issue is that each…