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![Creating Arrays and Objects
• Use [] instead of Array
• Use arrayVariable[length] = value instead of
arrayVariable.push(value)
• Use {} instead of Object](https://image.slidesharecdn.com/javascript-121124090451-phpapp02/85/Javascript-Best-Practices-and-Intro-to-Titanium-13-320.jpg)
![Creating Arrays and Objects
• Use [] instead of Array
• Use arrayVariable[length] = value instead of
arrayVariable.push(value)
• Use {} instead of Object](https://image.slidesharecdn.com/javascript-121124090451-phpapp02/75/Javascript-Best-Practices-and-Intro-to-Titanium-13-2048.jpg)
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Javascript Best Practices and Intro to Titanium
Javascript is a programming language used for web pages and server-side applications. It allows for dynamic scripts and efficient coding practices like self-calling functions. The document discusses Javascript best practices such as avoiding global scope, using 'var' for variables, and leveraging closures. It also covers object-oriented programming in Javascript and building cross-platform mobile apps using frameworks like Titanium.
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Javascript Best Practices and Intro to Titanium
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- 2. Who am I? • Ramkumar Murugadoss • @rampicos • facebook.com/raamkumar.m • Code
- 3. What is JavaScript •Javascript is the Programming language, first emerged to make dynamic scripts for Web pages • What do you think about Javascript?
- 4. Why Javascript • Whatwe use for: Programming Language for Web Pages • How it was in current: Programming Language for Server-side too • In near future: It is most wanted huge Programming Language for all
- 5. Best Practices • Allwe know Javascript • Everyone can code in Javascript • All we want to know, how efficiently we will write JS
- 6. About GC • GCis automatic • Objects are collected there is no references longer • Javascript Uses Mark and Sweep GC method
- 7. Avoid the globalscope • In the Global scope the Object never null, so never garbage collected • It’s time taking and trivial process to get the reference of global scope • If need to use global scope assign yourself null after the use
- 8. Use var • Don’tforget to use var for all your variables • The Variables without var may considered to global • You are making javascript to struggle for finding the scope of your variable
- 9. Get Use ofSelf-Calling Functions • Have any one noticied jQuery using self calling functions
- 10. What will bethe result?
- 11. Make your loopsmore efficient
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- 13. Creating Arrays andObjects • Use [] instead of Array • Use arrayVariable[length] = value instead of arrayVariable.push(value) • Use {} instead of Object
- 14. Closures • A closureis a special kind of object that combines two things: a function, and the environment in which that function was created • The environment consists of any local variables that were in- scope at the time that the closure was created
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- 17. Namespaces • thisprevent the global scope pollution • this protect your code from colliding with other code or libraries
- 18. Building String inLoops
- 19. Small Intro toOOPs • Everything in Javascript is Object based, (note there is no keyword called class in JS) • Now the question is then how can I create the Objects and its functions?
- 20. OOPs cond • Creatingfunctions in JS is considered to the Object, using prototypes you can define methods for that
- 21. Any Guess • Whatis the difference between this two codes
- 22. Don’t D.R.Y • Makethe reusability • Make use of Namespace
- 24. Cross Platform MobileApplications • What are Cross Platform Mobile Applications ? • Why build Cross Platform ? • What are the most popular development framework available ? • Which framework should I use?
- 25. Why Titanium • CodeOnce Build Everywhere • Native look and feel • Has more than 5,500+ device level APIs for iOS and Android • Object based Javascript only • In build Analytics • In build Cloud integration support (ACS) • Much more
- 26. What to doto start with Titanium today? Signup and download http://my.appcelerator.com Follow the “Quick Start” https://wiki.appcelerator.org/display/guides/home You’re ready to be a Titanium developer!
- 27. CommonJS • The Biggestfeature introduced from Node.js for reusability is CommonJS • Make your functions as unique namespaced modules and get to use of that • We have exports.yourfunction and module.exports as 2 ways to create CommonJS modules • Woow now browsers support CommonJS with some libraries
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