| // Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication | |
| // http://creativecommons.org/publicdomain/zero/1.0/ | |
| // HTML files: try the network first, then the cache. | |
| // Other files: try the cache first, then the network. | |
| // Both: cache a fresh version if possible. | |
| // (beware: the cache will grow and grow; there's no cleanup) | |
| const cacheName = 'files'; |
This is a compiled list of falsehoods programmers tend to believe about working with time.
Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.
| <!-- | |
| Complete feature detection for ES modules. Covers: | |
| 1. Static import: import * from './foo.js'; | |
| 2. Dynamic import(): import('./foo.js').then(module => {...}); | |
| Demo: http://jsbin.com/tilisaledu/1/edit?html,output | |
| Thanks to @_gsathya, @kevincennis, @rauschma, @malyw for the help. | |
| --> |
| # Description: Boxstarter Script | |
| # Author: Jess Frazelle <[email protected]> | |
| # Last Updated: 2017-09-11 | |
| # | |
| # Install boxstarter: | |
| # . { iwr -useb http://boxstarter.org/bootstrapper.ps1 } | iex; get-boxstarter -Force | |
| # | |
| # You might need to set: Set-ExecutionPolicy RemoteSigned | |
| # | |
| # Run this boxstarter by calling the following from an **elevated** command-prompt: |
| // only polyfill .finished in browsers that already support animate() | |
| if (document.body.animate) { | |
| // Chrome does not seem to expose the Animation constructor globally | |
| if (typeof Animation === 'undefined') { | |
| window.Animation = document.body.animate({}).constructor; | |
| } | |
| if (Animation.prototype.finished === undefined) { | |
| Object.defineProperty(Animation.prototype, 'finished', { |
Years ago, some smart folks that worked on JS engines realized that not all JS that's loaded into a page/app initially is needed right away. They implemented JIT to optimize this situation.
JIT means Just-In-Time, which means essentially that the engine can defer processing (parsing, compiling) certain parts of a JS program until a later time, for example when the function in question is actually needed. This deferral means the engine is freer to spend the important cycles right now on the code that's going to run right now. This is a really good thing for JS performance.
Some time later, some JS engine devs realized that they needed to get some hints from the code as to which functions would run right away, and which ones wouldn't. In technical speak, these hints are called heuristics.
So they realized that one very common pattern for knowing that a function was going to run right away is if the first character before the function keyword was a (, because that usually m
I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.
I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.
Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.
No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.
Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.
| 'use strict'; | |
| // Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication | |
| // http://creativecommons.org/publicdomain/zero/1.0/ | |
| (function() { | |
| // Update 'version' if you need to refresh the cache | |
| var staticCacheName = 'static'; | |
| var version = 'v1::'; |
