Cyril Celestine nola

New Orleans, LA
cyrilcelestine.com

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nola / assoicativearray.js

Created November 26, 2013 01:36

The old school way of setting up an array was to create a named array and then add each named element one by one. A quicker and more readable way is to add the elements at the same time using the object literal notation. Please note that Associative Array are essentially JavaScript Objects with properties.

	var skillSet = new Array();
	skillSet['Document language'] = 'HTML5';
	skillSet['Styling language'] = 'CSS3';
	skillSet['Javascript library'] = 'jQuery';
	skillSet['Other'] = 'Usability and accessibility';

	//short hand version
	var skillSet = {
	'Document language' : 'HTML5',
	'Styling language' : 'CSS3',

nola / variableShorthand.js

Created November 26, 2013 01:38

Declaring variables Shorthand

	var x;
	var y;
	var z = 3;

	//shorthand
	var x, y, z=3;

nola / operators.js

Created November 26, 2013 01:40

JS operators shorthand

	x=x+1;
	minusCount = minusCount - 1;
	y=y*10;

	//shorthand version
	x++;
	minusCount --;
	y*=10;

nola / ifshorthand.js

Created November 26, 2013 01:43

If Shorthand

	if (likeJavaScript == true)

	//shorthand
	if (likeJavaScript)

	//another version
	var a;
	if ( a != true ) {
	// do something...
	}

nola / functionArgs.js

Created November 26, 2013 01:45

Function Variable Arguments Shorthand

	function myFunction( myString, myNumber, myObject, myArray, myBoolean ) {
	// do something...
	}
	myFunction( "String", 1, [], {}, true );


	//shorthand
	function myFunction() {
	console.log( arguments.length ); // Returns 5
	for ( i = 0; i < arguments.length; i++ ) {

nola / foreachloop.js

Created November 26, 2013 01:53

JavaScript foreach Loop Shorthand

	for (var i = 0; i < allImgs.length; i++)

	//shorthand
	for(var i in allImgs)

	//with array
	function logArrayElements(element, index, array) {
	console.log("a[" + index + "] = " + element);
	}
	[2, 5, 9].forEach(logArrayElements);

nola / charat.js

Created November 26, 2013 01:54

charAt() Shorthand

	"myString".charAt(0);

	//shorthand

	"myString"[0]; // Returns 'm'

nola / switchshorthand.js

Created November 26, 2013 02:04

switch shorthand

	switch (something) {

	case 1:
	doX();
	break;

	case 2:
	doY();
	break;

nola / negativewhile.js

Created November 26, 2013 02:10

Decimal base exponents You can use 1 and 0 to represent true and false. I’ve seen this used in JavaScript game development in shorthand while loops. Note that if you use the negative start your array may be in reverse. You can also use while(i++<10) and you don't have to add the i++ later on inside the while.

	var i=0;
	while (i<9)
	{
	//do stuff
	i++; //say
	}

	//shorthand

	var i=9;

nola / gist:7652479

Created November 26, 2013 02:12

Shorter IF’z If you have multiple IF variable value comparisons you can simply ass them to an array and check for presence. You could use $.inArray as an alternative.

	if( myvar==1 \|\| myvar==5 \|\| myvar==7 \|\| myvar==22 ) alert('yeah')


	//shorthand
	if([1,5,7,22].indexOf(myvar)!=-1) alert('yeah baby!')

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