How can I calculate the time between 2 Dates in typescript

Question

This works in Javascript

new Date()-new Date(\"2013-02-20T12:01:04.753Z\")

But in typescript I can\'t rest two new Dates

Date(\         


        

Answer 1

It doesn't work because Date - Date relies on exactly the kind of type coercion TypeScript is designed to prevent.

There is a workaround this using the + prefix:

var t = Date.now() - +(new Date("2013-02-20T12:01:04.753Z");

Or, if you prefer not to use Date.now():

var t = +(new Date()) - +(new Date("2013-02-20T12:01:04.753Z"));

See discussion here.

Or see Siddharth Singh's answer, below, for a more elegant solution using valueOf()