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JavaScript is a versatile, high-level programming language. It is the programming language in all browsers.and can be used for back-end programming with node.js. Use this tag for questions regarding vanilla JavaScript; optionally tagged with an ECMAScript version. If you are using a preprocessor such as TypeScript please tag with that too.

2 votes
1 answer
809 views

Module pattern callback implementation

I'm rewriting a simple app using HTML/CSS/JavaScript that creates animations with images using intervals, and there's a bunch of buttons that controls these animations. … It's scaling and becoming really messed up, with logic mixed with DOM manipulations via jQuery all through one JavaScript script file. I've decided to use the Module design pattern. …
3 votes
2 answers
3k views

Load images, manipulate DOM, store/retrieve data using localStorage

Obs: I'd preferably handle these situations without an external library, using only JavaScript, but if there are some helpful ones, they're also welcome. …
4 votes
1 answer
78 views

Improving fading functions

Regarding these two functions, which do the same thing... Large and confusing: var fade = function(flag){ if (volumeIntervalId) clearInterval(volumeIntervalId); switch (flag){ …
2 votes
2 answers
5k views

Creating a new marker on a map

Is this code good practice? What kind of design pattern should I use for this specific situation? The following function creates a new marker on a map. It sets a new image for it, except when the mar …