The browser provides powerful APIs for DOM manipulation, timers, storage, and more.

• DOM: document.querySelector(), appendChild(), classList
• Events: addEventListener, removeEventListener
• Storage: localStorage.setItem(), getItem()
• Timers: setTimeout(), setInterval()

Create a simple counter that increments with a button, saves to localStorage, and loads on refresh.

The browser provides powerful APIs for DOM manipulation, timers, storage, and more.

• DOM: document.querySelector(), appendChild(), classList
• Events: addEventListener, removeEventListener
• Storage: localStorage.setItem(), getItem()
• Timers: setTimeout(), setInterval()

Create a simple counter that increments with a button, saves to localStorage, and loads on refresh.