abrjagad

var d, h, m, s,
	ms = $newDate - $currentDate;
	
s = Math.floor(ms / 1000);
m = Math.floor(s / 60);
s = s % 60;
h = Math.floor(m / 60);
m = m % 60;
d = Math.floor(h / 24);
h = h % 24;

abrjagad

//http://javascriptissexy.com/javascript-objects-in-detail/

//everything in javascript is objects.
//except number, strings & boolean
//objects are key/value pairs
//anything ends with () is a function
//in that way; new Object() is also a function
//and it has methods like create()
// and hasOwnProperty()

abrjagad

function getFunc() {
    var a = 7;
    return function(b) {
        alert(a+b);
    }
}
var f = getFunc();
f(5);

//12

abrjagad

var a = 1; 
    function b() { 
       a = 10; 
       return; 
       function a() {} 
    } 
   b(); 
   alert(a);
   
//Using the code above, the browser will alert "1".

abrjagad

function c(){
	return this;
}

c() //prints window

var obj = {
  a:1,
  b:2
}

abrjagad

var player, playButton = document.getElementById("play-button"),youttubeplayer = [];
/* this function gets called when API is ready to use*/
function onYouTubePlayerAPIReady() {
    /* create the global player from the specific iframe (#video)*/
    if (typeof(youtubeVideo) !== "undefined") {
        player = new YT.Player('video', {
            videoId: youtubeVideo,
            playerVars: {
                wmode: "opaque"
            },

abrjagad

<style>
	.line-behind {
    position: relative;
    text-align: center;
    &:after {
        content: "";
        height: 3px;
        display: block;
        position: absolute;
        left: 0;

abrjagad

    function autoResize(id) {

        var newheight;
        var newwidth;
        var id = document.getElementById(id);

        newheight = id.contentWindow.document.body.scrollHeight;
        newwidth = id.contentWindow.document.body.scrollWidth;

        id.height = newheight + "px";

abrjagad

node -v  // check node
npm update -g npm //update npm

npm install -g grunt-cli //install grunt command line

//existing project
npm install
grunt

//new project

abrjagad

http://rubyinstaller.org/downloads/ 
// ruby and devkit - download from here

ruby -v // check version

//devkit instalation
//extract the zip archive anywhere
// in cmd - go that location
// and run these two commands