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I'm not even certain what the title of this question should be - I'm not sure what is going… Read more Javascript Recursion Function Returning Undefined

I have a form on my page. When the user hits the Send button, in the background it also generates a… Read more Calling For A Function Returns 'undefined'

I am really confused as to when JavaScript returns null or undefined. Also different browsers seem … Read more When Is Null Or Undefined Used In Javascript?

In JavaScript undefined can be reassigned, so it is often advised to create a self executing functi… Read more Javascript Undefined Replaced With Null

Why is the value for undefined considered Finite in javascript while null is not? This is a very ba… Read more Why Is Isfinite(undefined) != Isfinite(null)?

[Bounty Edit] I'm looking for a good explanation when you should set/use null or undefined and … Read more When To Check For Undefined And When To Check For Null

When I run my game in Google Chrome and Firefox, the game screen is black, once I refresh it, it ru… Read more Phaser Error On First Load Of Game Undefined Variables

I would like to recursively clean any fields which are undefined, or have an empty object as parent… Read more Remove Undefined Properties From Object