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Minor edits to javascript

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Adam 2013-07-04 09:24:21 -07:00
parent 08c8ad6cb4
commit 36f0eeac14
1 changed files with 11 additions and 16 deletions
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@ -18,7 +18,7 @@ Feedback would be highly appreciated! You can reach me at
[@adambrenecki](https://twitter.com/adambrenecki), or [@adambrenecki](https://twitter.com/adambrenecki), or
[adam@brenecki.id.au](mailto:adam@brenecki.id.au). [adam@brenecki.id.au](mailto:adam@brenecki.id.au).
```javascript ```js
// Comments are like C. Single-line comments start with two slashes, // Comments are like C. Single-line comments start with two slashes,
/* and multiline comments start with slash-star /* and multiline comments start with slash-star
and end with star-slash */ and end with star-slash */
@ -33,9 +33,8 @@ doStuff()
// We'll leave semicolons off here; whether you do or not will depend on your // We'll leave semicolons off here; whether you do or not will depend on your
// personal preference or your project's style guide. // personal preference or your project's style guide.
/*********** ///////////////////////////////////
* 1. Numbers, Strings and Operators // 1. Numbers, Strings and Operators
***********/
// Javascript has one number type (which is a 64-bit IEEE 754 double). // Javascript has one number type (which is a 64-bit IEEE 754 double).
3 // = 3 3 // = 3
@ -110,9 +109,8 @@ undefined // used to indicate a value that hasn't been set yet
// null, undefined, NaN, 0 and "" are falsy, and everything else is truthy. // null, undefined, NaN, 0 and "" are falsy, and everything else is truthy.
// Note that 0 is falsy and "0" is truthy, even though 0 == "0". // Note that 0 is falsy and "0" is truthy, even though 0 == "0".
/*********** ///////////////////////////////////
* 2. Variables, Arrays and Objects // 2. Variables, Arrays and Objects
***********/
// Variables are declared with the var keyword. Javascript is dynamically typed, // Variables are declared with the var keyword. Javascript is dynamically typed,
// so you don't need to specify type. Assignment uses a single = character. // so you don't need to specify type. Assignment uses a single = character.
@ -162,9 +160,8 @@ myObj.myThirdKey = true
// If you try to access a value that's not yet set, you'll get undefined. // If you try to access a value that's not yet set, you'll get undefined.
myObj.myFourthKey // = undefined myObj.myFourthKey // = undefined
/*********** ///////////////////////////////////
* 3. Logic and Control Structures // 3. Logic and Control Structures
***********/
// The if structure works as you'd expect. // The if structure works as you'd expect.
var count = 1 var count = 1
@ -204,9 +201,8 @@ if (colour == "red" || colour == "blue"){
// && and || "short circuit", which is useful for setting default values. // && and || "short circuit", which is useful for setting default values.
var name = otherName || "default" var name = otherName || "default"
/*********** ///////////////////////////////////
* 5. Functions, Scope and Closures // 4. Functions, Scope and Closures
***********/
// JavaScript functions are declared with the function keyword. // JavaScript functions are declared with the function keyword.
function myFunction(thing){ function myFunction(thing){
@ -273,9 +269,8 @@ function sayHelloInFiveSeconds(name){
} }
sayHelloInFiveSeconds("Adam") // will open a popup with "Hello, Adam!" in 5s sayHelloInFiveSeconds("Adam") // will open a popup with "Hello, Adam!" in 5s
/*********** ///////////////////////////////////
* 6. More about Objects; Constructors and Prototypes // 5. More about Objects; Constructors and Prototypes
***********/
// Objects can contain functions. // Objects can contain functions.
var myObj = { var myObj = {