JSFiddle - React, Tailwind, and code Playground
Getting last day of month using date (always correct day)
JavaScript
let d = new Date(2017,2-1,1,12);
let lastDay = new Date(d.getFullYear(), d.getMonth()+1, 0);
console.log(lastDay);
let d = new Date(2017,2-1,1,12);
let lastDay = new Date(d.getFullYear(), d.getMonth()+1, 0);
console.log(lastDay);