Event4 better javascript
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This document summarizes a presentation on writing better JavaScript. It introduces the presenter and their background. It then covers object-oriented concepts in JavaScript, common coding principles like DRY and KISS, how to structure code using modules and dependencies versus events, unit testing, code organization tips, and resources for learning JavaScript like libraries, blogs, and open source projects.
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Have you heard of TDD? Are you interested or familiar with this practice but have never been able to understand it?
Join this session to see the benefits of Test-Driven Development (TDD), understand how it works and its benefits. In a more detailed approach, we will see this way of developing software, where our code is always built guided by tests.
We will go over some history about TDD, which is the main process we must follow when we work with this mechanic and the rules that surround it. We will also list the main advantages and disadvantages that most developers who practice TDD find and whether the arguments in favour add up to more than those that subtract. Finally, we will review some good habits and practices when applying TDD and see how to do it step by step with an example of a "live" coding session with Java.
At the end of the session, I hope that you will have a wider understanding of what TDD is, what advantages it brings, why it is interesting to master it and also that you will take with you some tricks and good practices to be able to apply them in your day-to-day life when writing code
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Presentation shared at Trójmiasto Java User Group (17th May '23)
Software developer interview fails
The document summarizes the NOVA Code Camp 2018 event. It thanks the organizers, volunteers, sponsors, and audience. It then provides an overview of interview fails and recommendations for software developer candidates, including listening, asking clarifying questions, and not letting your guard down during interviews. It ends with sample technical interview questions.
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Event4 better javascript
- 1. Write Better Javascript Event #4 Aymeric Gaurat Apelli Senior Developer
- 2. Who am I? Why a “Who am I?” • Aymeric Gaurat-Apelli • .NET developer/consultant since first beta • Worked in France, Australia (Readify) and Thailand • Web entrepreneur • Facebook games (1M users/day) • http://taskarmy.com • http://weekplan.net (knockout.js SPA) • Principal developer at Jetabroad (Thailand)
- 3. “Classes” Yes you can… kind of. Want inheritance? http://ejohn.org/blog/simple-javascript-inheritance/
- 4. Coding principles They apply to Javascript too! DRY Don’t repeat yourself KISS Simplicity (and avoiding complexity) should always be a key goal. YAGNI You aren’t going to need it.
- 5. Coding principles LAW OF DEMETER Code components should only communicate with their direct relations SRP A component of code (e.g. class or function) should perform a single well defined task. DEPENDENCY INJECTION Depend upon Abstractions. Do not depend upon Concretions.
- 6. How would you rewrite this code? Suggestion: http://jsfiddle.net/XejEY/1/
- 7. Javascript Frameworks More structure for your code Check out http://todomvc.com/
- 8. Templating engines Allow you to reuse snippets of HTML and to bind it to your data http://jsfiddle.net/aPv9H/1/ Choose a template engine Fast templating engine.
- 9. Scope There is no block level scope. A bit different from C# http://madebyknight.com/javascript-scope/ http://jsfiddle.net/Ukv2R/1/
- 10. Modules The solution to spaghetti code
- 11. Sample home grown module
- 12. AMD, the standard. Popular AMD module loader: requirejs
- 14. Dependencies versus events After refactoring Router.js module
- 16. Random tips 1. Link to your javascript code at the end of your HTML document 2. Bundle and minify 3. Work with css classes instead of working with styling/animations Example
- 17. Resources to learn http://microjs.com/ Fantastic micro libraries to use and learn from http://dailyjs.com Blog about new stuff in the Javascript world http://terrariumjs.wiselabs.net http://github.com Search for javascript projects
- 18. Thank you