WebFund 2016W Lecture 2: Difference between revisions

Revision as of 20:17, 13 January 2016

Video

The video from the lecture given on January 12, 2016 is now available.

Notes

In-class Notes

Lecture #2
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JavaScript

* no declared types
  - strings
  - objects
  - arrays
  - numbers (floats)
  - boolean

With Node
 - asynchronous (non-blocking) I/O

Student Notes

Administration Reminders

JavaScript: As a Language

JavaScript has nothing to do with Java.
- Why is it even called JavaScript then? At first it wasn't; it was developed as Mocha, changed to LiveScript and then finally renamed to JavaScript due to an agreement with Sun (acquired by Oracle).<ref>[1]</ref>
The only similarity between Java/JavaScript is some of the syntax, but that can be said for a lot of languages.

What's different about JavaScript?
- No declared data types; it's a "loose" language.
  - Instead of int i = 0, it's simply var i = 0.
- There's seven data types<ref>[2]</ref> (examples in brackets)
  - Boolean (true, false)
  - Number (3.1337, 1337, etc. There's no integer or long, everything is a float)
  - String ("Dave")
  - Symbol
  - Object
  - Null
  - Undefined

References

1 | references-column-count references-column-count-{{{1}}} }} }} }}" {{#if: | style="-moz-column-width:{{{colwidth}}}; column-width:{{{colwidth}}};" | {{#if: | style="-moz-column-count:{{{1}}}; column-count:{{{1}}};" }} }}> <references group=""></references>

@@ Line 40: / Line 40: @@
 ** No declared data types; it's a "loose" language.
 *** Instead of int i = 0, it's simply var i = 0.
-** There's seven data types<ref>[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures.]</ref> (examples in brackets)
+** There's seven data types<ref>[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures]</ref> (examples in brackets)
 *** Boolean (true, false)
 *** Number (3.1337, 1337, etc. There's no integer or long, everything is a float)