51_the_array_parameter.js

/*
 * 51. The Rest Operator
 */
let numbers = [1,2,3,4,5];

function sumUp(toAdd){
    let result = 0;
    for(let i=0; i<toAdd.length; i++){
        result += toAdd[i];
    }
    return result;
}

console.log(sumUp(numbers));