console.log covers 90% of debugging needs, but the Console API has genuinely useful methods most developers never discover.
console.table([{ name: 'Alice', age: 30 }, { name: 'Bob', age: 25 }]); // formatted table
console.group('User validation');
console.log('Checking email...');
console.log('Checking password...');
console.groupEnd(); // indents everything between group/groupEnd
console.time('fetchData');
await fetchData();
console.timeEnd('fetchData'); // logs elapsed time automatically
console.count('button clicked'); // auto-incrementing counter per label
console.assert(user.age >= 18, 'User must be an adult', user); // logs only if the assertion FAILS
console.trace('How did we get here?'); // prints a full stack trace
console.warn('Deprecated function used');
console.error('Something actually broke');
console.table alone is worth adopting — inspecting an array of objects as an actual formatted table is dramatically faster to read than the same data dumped with console.log, especially for anything with more than a couple of fields.