JavaScript best practice summary - Jonathan Mills from Pluralsight

In Javascript Tags #javascript Published 5/23/2019

Syntax - consistency is the king.
  • Use semicolons.
  • Use Linting. e.g. ESLint or JSHint
  • Curly braces should start in the same line of command, which is different from C#, etc.
  • Equality. Use === whenever possible.
  • Write variable, function, caller in order.
Behaviors - use strict mode.
  • Use var if it's not for a global variable
  • Use 'use strict';  This will remove weird JS behavior and throw an error rather than ignore silently.
  • Use 'var _this = this' pattern at the beginning of the object when creating a function object so as not to lose this scope inside the object.
Async Patterns
  • Callbacks
    • Use the named function.
    • Return callback function like 'done'.
  •  Promises
    • Use promise from promisejs, which can lead to monads.
  • ES6 and Babel
    • Use ES6 rather than ES5
    • To use ES6 set up the environment using Babel which transpile ES5 JS to ES6 JS.
  • Async Await
    • New stuff
 

Leave a comment

Please note that we won't show your email to others, or use it for sending unwanted emails. We will only use it to render your Gravatar image and to validate you as a real person.