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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


















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