JS/AS – Cache your RegExp!
In both JavaScript and ActionScript, creating a regular expression – even using literal notation – results in the instantiation of a new RegExp object. If you’re going to use a pattern repeatedly...
View ArticlePHP vs JS conditionals and ternary
Just a quick note about how PHP conditional operators differs from ECMA (JS and AS)… The double-pipe ‘OR’ operator, in JS, evaluated to the value of the expression that is not false. In PHP, it...
View ArticleUnderstanding Easing (Explaining Penner’s equations) – JavaScript and...
Despite the commonality of the classic easing equations, largely attributed to Penner, there doesn’t seem to be the in-depth examination of “how it works” that a lot of code is subject to nowadays....
View ArticleCache “nudger”
With web technologies generally, and flash specifically, managing cached assets can sometimes feel like walking a tightrope. If you’ve got a simple slideshow and have occasional updates to the image...
View ArticleActionScript – using the Factory Pattern for Display Objects (ViewFactory)
Instantiating a Display Object is a fairly heavy lift. Usually this is negligible, but when dealing with particle or fluid effects, it can add up. Here’s one implementation of the Factory pattern used...
View ArticleJavaScript – separate (split) array
I often have a list from the server that I need to split into 2 separate arrays. For example, all options that are enabled and all that are not. Here’s a little extension to handle that. Takes a single...
View ArticleJavaScript – splice array on multiple indices (multisplice)
Managing multiple splices in a loop can get confusing, as the position of each element changes after each splice operation. Here’s a little extension to help manage that: Array.prototype.multisplice =...
View ArticleJavaScript – remove multiple elements from an array
While you can always .filter() an array to remove unwanted elements, here’s a little sugar to remove all elements that evaluate truthily when compared to any argument passed: Array.prototype.remove =...
View ArticlejQuery (or anything else) basics of dragging
Here’s the most basic implementation of dragging I’m aware of… I’ll present an example usin jQuery, but the same logic can be used in any JS framework, raw JS, or even ActionScript, Java, or any other...
View ArticleWrapping / Looping / Infinite Array Traversal
I’ll use JavaScript syntax and provide a JS fiddle POC, but this really applies to almost any language – at least any that use indexed arrays (all that I can think of). To get an index greater than...
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