iamgoangle

const args = [0, 1, 2];
function foo (x, y, z) {
	// do stuff...
    // we are not using this keyword in foo()
}

// Call function
foo.apply(null, args);

// Using ... instead

iamgoangle

const arrA = [1, 2, 3];
const arrB = [4, 5, 6];

arrA.push(...arrB); // [1, 2, 3, 4, 5, 6]

let arrC = [1, 2, 3];
let arrD = [4, 5, 6];
arrC = [...arrC, ...arrD]; // [1, 2, 3, 4, 5, 6]

iamgoangle

let lists = ['pizza', 'poo'];
let results = ['mark', ...lists, 'too'];

//  result = ["mark", "pizza", "poo", "too"]

iamgoangle

let arrA = [1, 2, 3];
let copyA = [...arrA]; // [1, 2, 3] immutable

iamgoangle

let name = 'Prayuth';
let spreadName = [...name]; // "P", "r", "a", "y", "u", "t", "h"]

iamgoangle

let number = [9, 8, 7, 1];

console.log(Math.min(number));	// NaN
console.log(Math.min(...number));	// 1

iamgoangle

let { x, y, ...z } = { x: 1, y: 2, a: 3, b: 4 };
console.log(x); // 1
console.log(y); // 2
console.log(z); // { a: 3, b: 4 }

iamgoangle

const profile = {
	name: 'Teerapong Singthong'
};

const position = {
	job: 'Business Maker'
};

const summary = {...profile, ...position};

iamgoangle

const profile = {
	name: 'Teerapong Singthong'
};

const position = {
	job: 'Business Maker'
};

const summary = {...profile, job: 'Developer'};
/*

iamgoangle

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Powerlevel9k