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function getUrlParameters(parameter, staticURL, decode){
   var currLocation = (staticURL.length)? staticURL : window.location.search,
       parArr = currLocation.split("?")[1].split("&"),
       returnBool = true;
   
   for(var i = 0; i < parArr.length; i++){
        parr = parArr[i].split("=");
        if(parr[0] == parameter){
            return (decode) ? decodeURIComponent(parr[1]) : parr[1];
            returnBool = true;

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var defaults = { validate: false, limit: 5, name: "foo" };
var options = { validate: true, name: "bar" };

var settings = $.extend({}, defaults, options);

// settings
// {validate: true, limit: 5, name: "bar"}

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function insertUrlParams(uri, key, value) {
	var re = new RegExp("([?|&])" + key + "=.*?(&|$)", "i");
	separator = uri.indexOf('?') !== -1 ? "&" : "?";
	if (uri.match(re)) {
		return uri.replace(re, '$1' + key + "=" + value + '$2');
	}
	else {
		return uri + separator + key + "=" + value;
	}
}

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// getCookie(), setCookie(), deleteCookie()


// возвращает cookie если есть или undefined
function getCookie(name) {

    var matches = document.cookie.match(new RegExp(
      "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
    ))
    return matches ? decodeURIComponent(matches[1]) : undefined

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Spec
http://es5.github.io Annotated ECMAScript 5.1

Books
JavaScript: The Definitive Guide, David Flanagan 
JavaScript: The Good Parts, Douglas Crockford
Secrets of the JavaScript Ninja, John Resig
Pro JavaScript Techniques, John Resig
https://github.com/getify/You-Dont-Know-JS You Don't Know JS
http://bonsaiden.github.io/JavaScript-Garden/ JavaScript Garden

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How to install PhantomJS on Ubuntu

Version: 1.9.8

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update
sudo apt-get install build-essential chrpath libssl-dev libxft-dev

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// This particular code works with html that looks like this:

<div class="upload_container" id="photo_number_1">
    <div><input name="upload" class="photo_upload_field" type="file" /></div>
    <div><input type="button" class="upload_photo_submit" value="Upload Photo"></div>
    <p class="center loading hidden"><img src="/assets/loading.gif"></p>
    <script>
        // yes, I know, don't actually put this in a script tag here. It's for illustration purposes only
	$('.upload_photo_submit')[0]).click(function(event){ajaxFileUpload(event);});
    </script>

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function hasClass(el, className) {
  if (el.classList)
    return el.classList.contains(className)
  else
    return !!el.className.match(new RegExp('(\\s|^)' + className + '(\\s|$)'))
}

function addClass(el, className) {
  if (el.classList)
    el.classList.add(className)

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Creating a Happy Git Environment on OS X

Step 1: Install Git

brew install git bash-completion

Configure things:

git config --global user.name "Your Name"

git config --global user.email "you@example.com"

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Install with Homebrew

brew install mongodb

Set up launchctl to auto start mongod

$ ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents

/usr/local/opt/mongodb/ is a symlink to /usr/local/Cellar/mongodb/x.y.z (e.g., 2.4.9)