# Date.getMonth is not a function

**URL:** <https://community.haxe.org/t/date-getmonth-is-not-a-function/1929>\
**Category:** Haxe\
**Tags:** haxe-js\
**Created:** [July 23, 2019, 2:21pm UTC](https://community.haxe.org/t/date-getmonth-is-not-a-function/1929 "2019-07-23T14:21:24Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![tienery](https://community.haxe.org/user_avatar/community.haxe.org/tienery/32/964_2.png) [@tienery](https://community.haxe.org/u/tienery)\
**Post date:** [July 23, 2019, 2:21pm UTC](https://community.haxe.org/t/date-getmonth-is-not-a-function/1929/1 "2019-07-23T14:21:24Z")

</div>

In Haxe 4.0.0-rc.3, it appears in JavaScript generated code the date string function is retrieving parts of a date to generate a date string. However, the following generated JavaScript does not work:

```haxe
// Generated by Haxe 4.0.0-rc.3+e3df7a448
(function ($global) { "use strict";
var HxOverrides = function() { };
HxOverrides.dateStr = function(date) {
	var m = date.getMonth() + 1; // this is where the error is
	var d = date.getDate();
	var h = date.getHours();
	var mi = date.getMinutes();
	var s = date.getSeconds();
	return date.getFullYear() + "-" + (m < 10 ? "0" + m : "" + m) + "-" + (d < 10 ? "0" + d : "" + d) + " " + (h < 10 ? "0" + h : "" + h) + ":" + (mi < 10 ? "0" + mi : "" + mi) + ":" + (s < 10 ? "0" + s : "" + s);
};

```

The error, of course, is the subject header: `date.getMonth is not a function`.

In Haxe, this is the code I have while I was recording a tutorial:

```haxe
get("news", function(content, success)
        {
            if (success)
            {
                var data:Array<shared.TNews> = Json.parse(content);
                if (data.length == 0) return;

                var element = Browser.document.getElementById("content");
                getPage("pages/news-item.htm", function(result)
                {
                    result = result.replace("%title%", data[0].title);
                    result = result.replace("%content%", data[0].content);
                    result = result.replace("%date_posted%", data[0].date_posted.toString()); // this is the line in the callstack which is the source

                    new JQ(element).html(result);
                });
            }
        });

```

Is this a Haxe-specific issue? I can’t see an Issue on GitHub which would identify this as a Haxe-specific issue but I was wondering if this is fixable my end in case I missed something.

---

<div class="post-metadata">

**Author:** ![ibilon](https://community.haxe.org/user_avatar/community.haxe.org/ibilon/32/13_2.png) [@ibilon](https://community.haxe.org/u/ibilon)\
**Post date:** [July 23, 2019, 3:54pm UTC](https://community.haxe.org/t/date-getmonth-is-not-a-function/1929/2 "2019-07-23T15:54:41Z")

</div>

My guess is that the type of `date_posted` in TNews (probably Date) doesn’t match the type in the json (string or int/float maybe?), which crash at runtime.

When assigning a Json.parse you need to have a 1:1 match of the types (for instance you can’t load map like that).

---

<div class="post-metadata">

**Author:** ![tienery](https://community.haxe.org/user_avatar/community.haxe.org/tienery/32/964_2.png) [@tienery](https://community.haxe.org/u/tienery)\
**Post date:** [July 23, 2019, 3:58pm UTC](https://community.haxe.org/t/date-getmonth-is-not-a-function/1929/3 "2019-07-23T15:58:59Z")

</div>

Oh, I’m being stupid. In the server context, I am putting in the `date_posted` directly, stringifying the JSON, sending it back to the client and parsing it back into a JSON `typedef` as above.

It’s probably better to use a String in the `typedef` and use `Date.toString` on the server rather than the client.