Skip to content

Instantly share code, notes, and snippets.

@bluejava
bluejava / setVisiTimeout.js
Last active Mar 22, 2016
A setTimeout replacement that pauses when browser window is not "visible"
View setVisiTimeout.js
/**
* This function uses the Page Visibility API to puase/restart the timeout such that
* the time you specify equates to "visibility time".
* Note: There is no clearTimeout capability - though it would not be hard to extend this to
* provide cancel-ability
*
* Usage:
* setVisiTimeout(function, ms, arg1, arg2, ... );
*
* LICENSE: Unlicense <http://unlicense.org/> / CC0
@bluejava
bluejava / Soon (Fast)
Last active Jan 10, 2020
Insanely Fast Javascript thread Yield (see blog post)
View Soon (Fast)
// See http://www.bluejava.com/4NS/Speed-up-your-Websites-with-a-Faster-setTimeout-using-soon
// This is a very fast "asynchronous" flow control - i.e. it yields the thread and executes later,
// but not much later. It is far faster and lighter than using setTimeout(fn,0) for yielding threads.
// Its also faster than other setImmediate shims, as it uses Mutation Observer and "mainlines" successive
// calls internally.
// WARNING: This does not yield to the browser UI loop, so by using this repeatedly
// you can starve the UI and be unresponsive to the user.
// This is an even FASTER version of https://gist.github.com/bluejava/9b9542d1da2a164d0456 that gives up
// passing context and arguments, in exchange for a 25x speed increase. (Use anon function to pass context/args)
var soon = (function() {
@bluejava
bluejava / Soon
Last active Jun 30, 2020
A Very Fast Javascript thread yield (see blog posting)
View Soon
// See http://www.bluejava.com/4NS/Speed-up-your-Websites-with-a-Faster-setTimeout-using-soon
// This is a very fast "asynchronous" flow control - i.e. it yields the thread and executes later,
// but not much later. It is far faster and lighter than using setTimeout(fn,0) for yielding threads.
// Its also faster than other setImmediate shims, as it uses Mutation Observer and "mainlines" successive
// calls internally.
// WARNING: This does not yield to the browser UI loop, so by using this repeatedly
// you can starve the UI and be unresponsive to the user.
// Note: For an even faster version, see https://gist.github.com/bluejava/b3eb39911da03a740727
var soon = (function() {
You can’t perform that action at this time.