JSFiddle - React, Tailwind, and code Playground

HTML

<input type = "hidden" id ="myhidden" value = "1372854195130"/>

JavaScript

console.log("This will be invalid");
console.log($("#myhidden").val());
var date = new Date($("#myhidden").val());
console.log(date);

console.log("This will be valid");
var date = new Date(1372854195130);
console.log(date);