What is spread operator?? what is it used for? code example
Example 1: spread operator
function sum(x, y, z) {
return x + y + z;
}
const numbers = [1, 2, 3];
console.log(sum(...numbers));
console.log(sum.apply(null, numbers));
Example 2: spread operator
function sum(x, y, z) {
return x + y + z;
}
const numbers = [1, 2, 3];
console.log(sum(...numbers));
console.log(sum.apply(null, numbers));
Example 3: spread operator
let obj1 = { foo: 'bar', x: 42 };
let obj2 = { foo: 'baz', y: 13 };
let clonedObj = { ...obj1 };
let mergedObj = { ...obj1, ...obj2 };