JSON.parse returns String

[melnikaite]

JSON.parse(JSON.stringify(new Date))

Could you please explain why I'm getting String instead of Object?

https://jsfiddle.net/tbmf7yhx/1/

[tracker1]

Date.prototype.toJSON returns a string... ISO-8601 format by default... the hydration in JSON.parse does not re-hydrate dates by default...

You can pass your own hydration as a second parameter to JSON.parse

var str = JSON.stringify(new Date()); //this is a string.

var dtm = JSON.parse(str, function(val) {
  if (typeof val !== string) return val;

  //new Date(ISOSTRING) requires a modern browser of ES5-shim of Date
  if ((/^\d{4}\-\d\d\-\d\dT\d\d\:\d\d\:\d\d/).test(val)) return new Date(val); 

  return val;
})

Your best bet is to just know which fields are supposed to be date-time and translate appropriately. Also, this doesn't account for older MS Asp.Net based services, which used a different encoding for dates, this was before the more prevailant ISO-8601 utc construct became more popular. It also won't carry timezone information or offsets etc generally.

Beyond this, there is a hydrator bug with IE8 that will error and you can't catch if you have added shimmed ES5 methods to Object.prototype or Array.prototype.

[melnikaite]

Thanks for explanation I support only modern browsers, so ended up with https://jsfiddle.net/tbmf7yhx/2/