JSFiddle - React, Tailwind, and code Playground

JavaScript

var ts = "20131024010907";

var isoTs = ts.substring(0,4) + "-" + ts.substring(4,6) + "-" + ts.substring(6,8) + " " + ts.substring(8,10) + ":" + ts.substring(10, 12) + ":" + ts.substring(12)

console.log(isoTs)
console.log(new Date(isoTs))