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## service-workers.md

      
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                Rich-Harris
                / service-workers.md
            
            
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              May 6, 2024 22:10
            
              
                Stuff I wish I'd known sooner about service workers
              
          
    Stuff I wish I'd known sooner about service workers

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.
Use Canary for development instead of Chrome stable

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.

  
## developing_apps_on_chromebook.md

      
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                judsonmitchell
                / developing_apps_on_chromebook.md
            
            
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              December 22, 2022 16:39
            
              
                A quick guide to developing Android and iOS apps using only a Chromebook.
              
          
    How I Develop iOS and Android Apps Using a Chromebook.

(Current as of July, 2014)

I'm a Chromebook fanboy, I admit it.  I had one of the first CR-48s and am now happily possessed of an Acer C720.  I use it for everything, from writing legal briefs to developing apps, and I am thoroughly satisfied with it.
Mobile App development on a CB poses some special issues, however.  Most developers have dedicated OS-specific machines to develop mobile apps (on iOS this is almost a requirement), but I simply refuse to buy an Apple computer just to create a mobile app. After much trial and error, I have found it possible, even enjoyable, to create apps on my CB.  Here's how I do it.
1. Preparing the Chromebook


## get_barcode_from_image.js
/*
 *    Copyright (c) 2010 Tobias Schneider
 *    This script is freely distributable under the terms of the MIT license.
 */

(function(){
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        "2221": '1',
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	/*
	* Copyright (c) 2010 Tobias Schneider
	* This script is freely distributable under the terms of the MIT license.
	*/

	(function(){
	var UPC_SET = {
	"3211": '0',
	"2221": '1',
	"2122": '2',