Should You Use JavaScript Library CDNs? « Lickity Split
sing Google’s JavaScript Library CDN comes with a 1/3 of a second tax on missing. (Note that a tax like this applies to opening connections to a any new host: JavaScript Library CDNs, advertisers, analytics and visitor tracking, etc. This is why you should try to reduce the number of different hostnames you serve content from.)
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When should you use DateTime and when should you use Time?
The differences are subtle. You probably want to use Time, except when you want to use DateTime. See the attached article for details.
You should be using the Web Animations API
The Web Animations API has great browser support, and you should be using it to animate DOM elements from JavaScript, or to control or wait...
You should probably load your JavaScript with <script defer>
It is generally discouraged to load your JavaScript by a <script src> tag in the <head>:
<head>
<script src="app.js"></script>
</head>
The reason is that a <script src> tag will pause the DOM parser until the script has l...
Heads up: You should always use "current_window.resize_to" to resize the browser window in tests
I recently noticed a new kind of flaky tests on the slow free tier GitHub Action runners: Integration tests were running on smaller screen sizes than [specified in the device metrics](https://makandracards.com/makandra/492109-capybara-running-test...
Why you should never use hash functions for message authentication
Read the linked article together with this reply to get an appreciation for why it's a bad idea to roll your own crypto protocol.
RaphaelJS: A Javascript vector graphics library
Raphaël is a small JavaScript library that should simplify your work with vector graphics on the web. If you want to create your own specific chart or image crop and rotate widget, for example, you can achieve it simply and easily with this libr...
makandra cards: A knowledge base on web development, RoR, and DevOps
What is makandra cards?
We are makandra, a team of 60 web developers, DevOps and UI/UX experts from Augsburg, Germany. We have firmly anchored the sharing of knowledge and continuous learning in our company culture. O...
YSlow for Firebug
YSlow analyzes web pages and tells you why they're slow based on the rules for high performance web sites. YSlow is a Firefox add-on integrated with the popular Firebug web development tool.
Keeping web applications fast
Our applications not only need to be functional, they need to be fast.
But, to quote Donald Knuth,
premature optimization is the root of all evil (or at least most of it) in programming
The reasoning is that you should not waste your time op...
JSONP - Wikipedia
Under the same origin policy, a web page served from server1.example.com cannot normally connect to or communicate with a server other than server1.example.com. An exception is the HTML <script> element. Taking advantage of the open policy f...