JavaScript Short Notes

JavaScript Short Notes

JavaScript Arrays Destructuring

Assigning array items to variable

const [a, b, c] = [123, 'second', true];

//a => 123

//b => 'second'

//c => true

Skipping items

const [, b] = [123, 'second', true];

//b => 'second'

Assigning the first value, storing the rest together

const [a, b, ...rest] = [123, 'second', true, false, 42];

//a => 123

//b => 'second'

//c => [true, false, 42]

Swapping variables

let x = true;

let y = false;

[x, y] = [y, x]

//x => false

//y => true