Practice Yourself - JS Array Methods

Code Editor javascript
const fruits = ['apple', 'banana', 'cherry', 'date'];

// map - transform each element
const upper = fruits.map(f => f.toUpperCase());

// filter - keep matching elements
const long = fruits.filter(f => f.length > 5);

// find - first match
const found = fruits.find(f => f.startsWith('c'));

// reduce - accumulate
const lengths = fruits.reduce((sum, f) => sum + f.length, 0);

console.log(upper);   // ['APPLE', 'BANANA', 'CHERRY', 'DATE']
console.log(long);    // ['banana', 'cherry']
console.log(found);   // 'cherry'
console.log(lengths); // 21