00_0_useful-methods.md

Useful methods

TO DO: Description or intro...

Arrays

Add element at the beginning: [+element,1,2,3]

const arr = [1, 2, 3];
arr.unshift(0);
console.log(arr);

Result: [ 0, 1, 2, 3 ]

Add element at the end: [1,2,3,+element]

const arr = [1, 2, 3];
arr.push(0);
console.log(arr);

Result: [ 1, 2, 3, 0 ]

Remove first element: [-element,1,2,3]

const arr = [1, 2, 3];

// we can store that element in a variable
// const first = arr.shift();

arr.shift();
console.log(arr);

Result: [ 2, 3 ]

Remove element at the end: [1,2,3,-element]

const arr = [1, 2, 3];

// we can store that element in a variable
// const last = arr.pop();

arr.pop();
console.log(arr);

Result: [ 1, 2 ]

Strings

Objects