Array method
by tea4two
HTML
<p id="reduce">Reduce: </p>
JavaScript
const reduce = document.querySelector('#reduce');
const arrreduce = [10, 20, 30, 50, 90, 100, 200];
let newVal = arrreduce.reduce( (total, current, curIndex, arr) => {
return total + current;
}, 0);
console.log(newVal);
reduce.append(newVal);