Javascript: Rest Parameters

The rest parameter is an ES6 syntax that is used to represent an indefinite number of elements as an array.

See arrays in Java

Example

function add(...elements){
let sum = 0;
for(let i of elements){
sum +=i;
} 
console.log(sum);
}

console.log(add(2,4,6)); //12

It can also be used to get the rest elements of an array.

Example

let snacks = ["meatpie", "sausage", biscuit", "pizza"];
let drinks = ["Coke", "Sprite", "Malt", "Fanta"];

snacks.push(...drinks);
console.log(snacks); //combines all elements of snacks and //drinks

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