Basic Javascript
Data Types & Variables Core JS datatypes: number (no distinction between float and integer), string (variable length, but immutable), boolean, object. Also null and undefined are special trivial...
View ArticleJavaScript Notes
These are a few notes and best practices for doing client-side development with Javascript. Use a JavaScript Library First and foremost, you’ll almost certainly want to use a JavaScript library. Like...
View ArticleJavaScript interview questions
1. Difference between window.onload and onDocumentReady? The onload event does not fire until every last piece of the page is loaded, this includes css and images, which means there’s a huge delay...
View ArticleWhy uninitialized variables get the special value undefined ?
Uninitialized variables get the special value undefined. When you assign a variable to another variable you’re giving it a string that references a variable you’ve defined within the current scope. In...
View ArticleWhat is the best way to check if a property or variable is undefined?
This is actually a somewhat tricky question. Let’s start off with some facts about undefined and then see what kind of function is consistent with the ones you care about. Javascript attaches types to...
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