Javascript — Testing and Debugging

Testing ensures code works as expected; JavaScript has tools like Jest, Mocha, and Jasmine for unit testing. Debugging techniques include using browser developer tools, console logging, and step-by-step code tracing to locate and fix bugs.

// Jest test example
test('adds 1 + 2 to equal 3', () => {
  expect(1 + 2).toBe(3);
});