\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{AlvaroRockster}
\pdfinfo{
  /Title (javascript.pdf)
  /Creator (Cheatography)
  /Author (AlvaroRockster)
  /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}{81A370}
\definecolor{LightBackground}{HTML}{F7F9F6}
\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}{AlvaroRockster} via \textcolor{DarkBackground}{\uline{cheatography.com/58068/cs/15367/}}}
\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}AlvaroRockster \\
  \uline{cheatography.com/alvarorockster} \\
  \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 5th April, 2018.\\
   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*}{3}

\begin{tabularx}{5.377cm}{x{1.78503 cm} x{1.09848 cm} x{1.69349 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Values}}  \tn
% Row 0
\SetRowColor{LightBackground}
Operators & Strings & Weird Stuff \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
+, -, *, /, \% & "string" & infinity \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
+=, -=, *=, /= & 'string' & -infinity \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
++, -{}- & \textbackslash{}`string` & NaN \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textless{}, \textless{}=, \textgreater{}, \textgreater{}= & .length & null, undefined \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
\&\&, ||, ! & \textbackslash{}n &  \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
typeof() & + (concat) &  \tn 
% Row Count 9 (+ 2)
% Row 7
\SetRowColor{white}
state ? 1 : 2 & \textbackslash{}t (tab) &  \tn 
% Row Count 10 (+ 1)
% Row 8
\SetRowColor{LightBackground}
==, != (convert) & \textbackslash{}" &  \tn 
% Row Count 12 (+ 2)
% Row 9
\SetRowColor{white}
===, !== & \textbackslash{}\textbackslash{} &  \tn 
% Row Count 13 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{-Backtick-quoted (template literals) ables: \newline \textbackslash{}` fourteen is also \$\{10+4\}` \newline // fourteen is also 14 \newline  \newline -Empty strings convert to false when parse to boolean: \newline "" = false \newline  \newline -let ,const \& var scope with funtions \newline -var doesnt scope with loops \newline -let \& const scope with loops}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{3.18528 cm} x{1.79172 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Program Structure}}  \tn
% Row 0
\SetRowColor{LightBackground}
Conditional & Useful Things \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
if()\{\}else if()\{\}else\{\} & break \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
while()\{\} & continue \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
do\{\} while() & //, /* */ \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{for(let i=0;i\textless{}x;i++)\{\}} \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{switch (x) \{ \newline   ~case 1: \newline     ~~~break; \newline   ~case "cloudy": \newline     ~~~console.log("Bring umbrella."); \newline     ~~~break; \newline   ~default: \newline     ~~~break; \newline \}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Function}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{// Define a function \newline const makeNoise = function() \{ \newline   console.log("Pling!"); \newline \}; \newline  \newline // Declaration notation \newline function makeNoise \{ \newline   console.log("Pling!"); \newline \}; \newline  \newline // Arrow function \newline const makeNoise = () =\textgreater{} \{ \newline   console.log("Pling!"); \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{-Default value of parameters is undefined. \newline  \newline -Default value of parameters can be change: \newline function power(base, exponent = 2) \{ \newline ~~... \newline \}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.9908 cm} x{2.9862 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Variables Control}}  \tn
% Row 0
\SetRowColor{LightBackground}
Convertion & Binding \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Number() & let, var, const \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
String() & prompt() \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{Boolean()} \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{-A single bind allows multiple values: \newline let x = 0, y = 'dog'; \newline  \newline -Bind names can't begin with numbers: \newline let 4number = 4; WRONG! \newline  \newline - Bind names may contain: \newline letters, numbers, (\$), (\_)}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} p{0.4977 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Create Variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{let string = "x"} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{let number = 2} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{let boolean = true} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{let array = {[}0, 1{]}} \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{let object = \{ \newline ~~happy : true, \newline ~~age : 20 \newline \}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Number Object}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Number Methods} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Number.isNaN()} \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}