JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>
JavaScript
'use strict';
function StairCase(n) {
for (var i = 0; i < n; ++i) {
var hashArray =_.fill(Array(n), ' ', 0, n);
var stairCaseTread = _.fill(hashArray, '#', 0, i+1);
console.log(_(stairCaseTread).reverse().join(''));
};
}
StairCase(6);