Tutorial – JavaScript Essentials

Keyhole Software Development Technology, HTML5, JavaScript Leave a Comment

Attention: The following article was published over 7 years ago, and the information provided may be aged or outdated. Please keep that in mind as you read the post.

If you’ve been developing enterprise web applications, it’s likely that you have applied JavaScript in some fashion – probably to validate user input with a JavaScript function that validates a form control, manipulate an HTML document object model (DOM) for a user interface effect, or even to use AJAX to access the server to eliminate a page refresh.

Single Page Application architectures allow rich, responsive user interfaces to be developed. There are many frameworks and approaches available, excluding plug-in technologies, that are JavaScript-based. This means that developers need a deeper understanding of JavaScript language features to fully take advantage of SPA.

This tutorial assumes you have programming experience in a traditional object oriented language like Java or C#, and introduces features of JavaScript that allow it to be a general purpose programming language. You may be surprised by its expressiveness and object oriented capabilities.

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This tutorial covers:

  • JavaScript execution environment
  • The structure of the JavaScript language
  • The importance of Objects
  • Prototypes and Inheritance
  • Functions and Closures
  • AJAX

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