Generate random date between two dates and times in Javascript

Question

I want to generate a random date between two dates and between two times in javascript. For instance I want to generate a random date (between 8 am and 6 pm) between today a

Answer 1

A single function.

    function (line) {
   return  new Date(new Date('2019-02-12T01:57:45.271Z').getTime() + Math.random() * (new Date('2020-02-12T01:57:45.271Z').getTime() - new Date('2019-02-12T01:57:45.271Z').getTime())).toISOString(); 
}