\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{teel85}
\pdfinfo{
  /Title (javascript.pdf)
  /Creator (Cheatography)
  /Author (teel85)
  /Subject (JavaScript Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{74A37F}
\definecolor{LightBackground}{HTML}{F6F9F7}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{JavaScript Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{teel85} via \textcolor{DarkBackground}{\uline{cheatography.com/30238/cs/8981/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}teel85 \\
  \uline{cheatography.com/teel85} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 4th September, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{1.76 cm} x{6.24 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Data types}}  \tn
% Row 0
\SetRowColor{LightBackground}
strings & `"some text"` \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
numbers & `5 | 12` \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{booleans} & `true | false | 5 \textgreater{} 3 (true)` \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
arrays & `{[}data, data, data{]};` \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{1.28 cm} x{6.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Comparison operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textgreater{} & Greater than \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textless{} & Less than \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textless{}= & Less or equal \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textgreater{}= & Greater or equal \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
=== & Equal to \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
!== & Not equal to \tn 
% Row Count 6 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.8 cm} p{3.2 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
a = a + 1 & a++ \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
a = a - 1 & a-{}- \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
a = a + b & a += b \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
a = a - b & a -= b \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
a = a * b & a *= b \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
a = a / b & a /= b \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
a = a \% b & a \%= b \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{6.24 cm} p{1.76 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{isNaN}}  \tn
% Row 0
\SetRowColor{LightBackground}
`isNaN('smth')` & true \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
`isNaN(NaN)` & true \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
`isNaN(undefined)` & true \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
`isNaN(15)` & false \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{3.2 cm} p{4.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Logical operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
\&\& & and \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
|| & or \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
! & not \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.84 cm} x{6.16 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{String Properties and Methods}}  \tn
% Row 0
\SetRowColor{LightBackground}
.length & Return the number of characters in a string \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{.substring()} & Extract characters from a string, \{\{nl\}\}`var str = "Hello world!"; \{\{nl\}\}var res = str.substring(1, 4); \{\{nl\}\} -\textgreater{} ell` \tn 
% Row Count 6 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{If else}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{if (condition1) \{ \newline     // code \newline \} else if (condition2) \{ \newline     // code \newline \} else \{ \newline     // code \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Functions}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{var doStuff = function (par1, par2) \{ \newline    value = par1 + par2; \newline    print value; \newline \} \newline  \newline countSomeStuff(par1,par2);} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{FOR loop}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{for (var i = 1; i \textless{} 11; i = i + 1) \{ \newline     // code \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{While}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{var x = true; \newline while ( x === true) \{ \newline  // code \newline  x = false // to stop loop \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Case Switch}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{switch ( x ) \{ \newline     case 'option1': \newline         // code \newline         break; \newline     case 'option2': \newline         // code \newline         break; \newline     case 'option3': \newline         // code \newline         break; \newline     default: \newline        // code \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Objects}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{var myObject = \{ \newline     key: value, \newline \}; \newline  \newline var emptyObj = \{\}; \newline  \newline var myObj = new Object(); \newline  \newline myObj.name = "Tom"; \newline  \newline loop over the keys of an object: \newline for (var x in object) \{ \newline   // code \newline \} \newline  \newline Create class for ogject: \newline  \newline function Cat(name, breed) \{ \newline     this.name = name; \newline     this.breed = breed; \newline \} \newline var cheshire = new Cat("Cheshire Cat", "British Shorthair"); \newline  \newline if you want to add a method to a class such that all members of the class can use it, we use the following syntax to extend the prototype: \newline  \newline className.prototype.newMethod = \newline function() \{ \newline  // code \newline \};} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}