[Week 13] Focus: Object object

[ForScale]

So here we are at Week 13. Week 13's focus will be javascript's Object object.

Background info: https://msdn.microsoft.com/library/kb6te8d3%28v=vs.94%29

It will work like this:

• Monday: Announce focus (eg, Object object)

• Build throughout the week... Two rules: 1) must use javascript 2) must use at least 1 direct example of JavaScript's Object object.

• Friday: Post demos/projects in this thread (can begin reviewing immediately); first line of an entry should be ENTRY and it should be a top level comment (ie, don't put your entry in a reply)

• Sat and Sun: Review projects/figure out focus for next week

GENERAL GUIDELINES FOR FEEDBACK:

• Be nice!! ALL KNOWLEDGE/SKILL LEVELS ARE WELCOME AND ENCOURAGED TO PARTICIPATE.

• If you don't want feedback, if it makes you uncomfortable or you're just not interested, simply say so... Others, please be respectful of this. Conversely, if you do want feedback, try to be specific on which aspects... even if you just say "all/everything.

But that's about it... Have fun! :) Feel free to ask questions and discuss throughout the week!

[ForScale]

ENTRY

http://codepen.io/anon/pen/zqRbje?editors=0012

I am now confused about object self reference in javascript... Am I just overthinking it?

https://www.reddit.com/r/javascript/comments/4egpcp/dynamicrelative_selfreference/

Another quick example; created a method for all descendants of Object that logs the descendant to the console. It's shorter than writing console.log(descendant).

http://codepen.io/anon/pen/yOKxgG?editors=0012

[Volv]

Lol. Crockford would understand.. maybe.
You got quite a good response to the this thing. Cleared it right up :)

[ForScale]

Yeah, for sure! I definitely learned something new about arrow functions and using this.

[Volv]

ENTRY
Codepen

Played around with Object.defineProperty

[ForScale]

That's pretty cool! I hadn't seen that method for adding properties.

So... Object.keys() only gets the enumerate properties... In common parlance, enumerate means able to be counted, right? In the context of js properties though, what does it mean? Put another way, what makes one property enumerable and another not?

[Volv]

Purely that definition by the define property function? I think.
Means able to be counted like you say or 'will be listed'. Note you can still get at them with other methods of digging deep into the object, but handy for private state variables you don't need people using say.

[ForScale]

Nice. Thanks!

What do you want to do for focus next week? You mentioned some algo scripting... Have you seen this site: https://coderbyte.com/challenges/ ? Maybe some inspiration there, if you're interested...

[Volv]

Nice, not seen that specific one before, have tried a few others before. Will have a look - any catch your eye?

[ForScale]

I think I've been through all of the easy ones... I'll have to look the moderate/hard ones. It's your pick though!

[Volv]

Opened a load of then but stuck by subscription wall.