Top 10 JavaScript Array Methods You Should Know

const arr = [1, 2, 3, 4, 5, 6];  arr.forEach(item => {
console.log(item); // output: 1 2 3 4 5 6
});
const arr = [1, 2, 3, 4, 5, 6];

arr.includes(2); // output: true
arr.includes(7); // output: false
const arr = [1, 2, 3, 4, 5, 6];  // item(s) greater than 3
const filtered = arr.filter(num => num > 3);
console.log(filtered); // output: [4, 5, 6]
console.log(arr); // output: [1, 2, 3, 4, 5, 6]
const arr = [1, 2, 3, 4, 5, 6];  // add one to every element
const oneAdded = arr.map(num => num + 1);
console.log(oneAdded); // output [2, 3, 4, 5, 6, 7]
console.log(arr); // output: [1, 2, 3, 4, 5, 6]
const arr = [1, 2, 3, 4, 5, 6];  // at least one element is greater than 4?
const largeNum = arr.some(num => num > 4);
console.log(largeNum); // output: true
// at least one element is less than or equal to 0?
const smallNum = arr.some(num => num <= 0);
console.log(smallNum); // output: false
const arr = [1, 2, 3, 4, 5, 6];  // all elements are greater than 4
const greaterFour = arr.every(num => num > 4);
console.log(greaterFour); // output: false
// all elements are less than 10
const lessTen = arr.every(num => num < 10);
console.log(lessTen); // output: true
const arr = [1, 2, 3, 4, 5, 6];
const alpha = ['e', 'a', 'c', 'u', 'y'];
// sort in descending order
descOrder = arr.sort((a, b) => a > b ? -1 : 1);
console.log(descOrder); // output: [6, 5, 4, 3, 2, 1]
// sort in ascending order
ascOrder = alpha.sort((a, b) => a > b ? 1 : -1);
console.log(ascOrder); // output: ['a', 'c', 'e', 'u', 'y']
const name = 'frugence';
const nameArray = Array.from(name);
console.log(name); // output: frugence
console.log(nameArray); // output: ['f', 'r', 'u', 'g', 'e', 'n', 'c', 'e']
const nums = Array.of(1, 2, 3, 4, 5, 6);
console.log(nums); // output: [1, 2, 3, 4, 5, 6]

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Abdur Rahman

Abdur Rahman

I'm a student I always like to learn new things and have experience with new stuff. I'm trying to be more creative and will come back soon with something unique