How do I parse an ISO date string in d3.js v4?

Question

Given a string "2001-01-30", how can I parse it and obtain a JavaScript Date object, ideally using d3.js v4?

Answer 1

To parse an ISO-8601-formatted date string, use the d3.js v4 method d3.isoParse.

For example, in my location (Calgary, Alberta):

d3.isoParse("2001-01-30");

returns:

Mon Jan 29 2001 17:00:00 GMT-0700 (Mountain Standard Time)

To return a consistent end-of-day value, clear the time using Date.setHours(hour,min,sec,millisec):

let d = d3.isoParse("2001-01-30)
          .setHours(0,0,0,0);
console.log(d);

Returns:

Mon Jan 29 2001 00:00:00 GMT-0700 (Mountain Standard Time)