\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{Todin}
\pdfinfo{
  /Title (base-javascript.pdf)
  /Creator (Cheatography)
  /Author (Todin)
  /Subject (Base 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}{000000}
\definecolor{LightBackground}{HTML}{F7F7F7}
\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{Base JavaScript Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Todin} via \textcolor{DarkBackground}{\uline{cheatography.com/174736/cs/36724/}}}
\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}Todin \\
  \uline{cheatography.com/todin} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 26th January, 2023.\\
   Updated 26th January, 2023.\\
   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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Language itself}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Language for web 98\% site use it create dynamic and interactive web content like applications and browsers \newline % Row Count 3 (+ 3)
JS is an interpreted language, it's a dynamic typing language and a weakly typed language. \newline % Row Count 5 (+ 2)
As JS use a form of automatic memory management it's garbage collected. \newline % Row Count 7 (+ 2)
JS is both an oriented object language and a functional language, the particularity of it's OOP is in inheritance which is very complete and easy to use.% Row Count 11 (+ 4)
} \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}{Language environment}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{To execute JavaScript in a browser you have two options either put it inside a script element anywhere inside an HTML document, or put it inside an external JavaScript file (with a . js extension). \newline % Row Count 4 (+ 4)
To run JS you only need a text editor and a web browser where you can execute it by implementing it in an html code, this means it's a multiplatform language whiwh can be used on all the OS and does not have any impact on your local machine. \newline % Row Count 9 (+ 5)
If you want to run it in a terminal you need node.js.% Row Count 11 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.08 cm} x{5.92 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Library}}  \tn
% Row 0
\SetRowColor{LightBackground}
jQuery & It makes things simpler for HTML document manipulation and traversal, animation, event handling, and Ajax. \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
React.js & Just design a simple view for individual states in your app. Next, it will render and update the right component efficiently upon data changes. \tn 
% Row Count 9 (+ 5)
% Row 2
\SetRowColor{LightBackground}
D3.js & Document manipulation based on data. \tn 
% Row Count 11 (+ 2)
% Row 3
\SetRowColor{white}
Lodash & JS utility library that makes it easier to work with numbers, arrays, strings, objects, etc. \tn 
% Row Count 15 (+ 4)
% Row 4
\SetRowColor{LightBackground}
Algolia Places & JavaScript library that provides an easy and distributed way of using address auto-completion on your site. It's a blazingly fast and wonderfully accurate tool that can help increase your site user experience. \tn 
% Row Count 23 (+ 8)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{To go further}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{The philosophy behind the creation of JS is simplicity, composability, uniformity as the only programming language native to the web browser. \newline % Row Count 3 (+ 3)
JS is used for : \newline % Row Count 4 (+ 1)
- Adding interactive behavior to web pages \newline % Row Count 5 (+ 1)
- Creating web and mobile apps \newline % Row Count 6 (+ 1)
- Building web servers and developing server applications \newline % Row Count 8 (+ 2)
- Game development (in browser)% Row Count 9 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Syntax and data structures}}  \tn
% Row 0
\SetRowColor{LightBackground}
`console.log()` & print into the terminal \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`let a = b` & create a mutable variable \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`const a = b` & create an immutable variable \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`a + b` & concatenate if both string else if both numerical sum \tn 
% Row Count 9 (+ 3)
% Row 4
\SetRowColor{LightBackground}
``\$\{a\} text \$\{b\}`` & if printed show the value of the variable \tn 
% Row Count 12 (+ 3)
% Row 5
\SetRowColor{white}
`if (condition)\{Do something\}; else if ()\{\}; else \{\}` & condition \tn 
% Row Count 15 (+ 3)
% Row 6
\SetRowColor{LightBackground}
`for (var i = 0; i \textless{}= 11; i++)\{ Do something; \}` & for loop \tn 
% Row Count 18 (+ 3)
% Row 7
\SetRowColor{white}
`while (condition)\{ Do something; \}` & while loop \tn 
% Row Count 20 (+ 2)
% Row 8
\SetRowColor{LightBackground}
`let arr = {[}{]}` & create an array \tn 
% Row Count 21 (+ 1)
% Row 9
\SetRowColor{white}
`arr.push()` & append the array \tn 
% Row Count 22 (+ 1)
% Row 10
\SetRowColor{LightBackground}
`const readline = require('readline').createInterface(\{ input: process.stdin, output: process.stdout \}); \seqsplit{readline.question("text"}, (var) =\textgreater{} \{ Do something ; readline.close(); \})` & to print text and take the answer from the terminal as a variable \tn 
% Row Count 31 (+ 9)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Syntax and data structures (cont)}}  \tn
% Row 11
\SetRowColor{LightBackground}
`class ClassName \{ constructor(var)\{this.var;\} Method()\{\}\}` & create a class \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\{\{link="https://htmlcheatsheet.com/js/"\}\}Pour plus\{\{/link\}\}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}