\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{sally sung}
\pdfinfo{
  /Title (full-stack-dev-with-js-quiz1.pdf)
  /Creator (Cheatography)
  /Author (sally sung)
  /Subject (Full Stack Dev With JS - Quiz1 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}{382BF0}
\definecolor{LightBackground}{HTML}{F2F1FE}
\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{Full Stack Dev With JS - Quiz1 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{sally sung} via \textcolor{DarkBackground}{\uline{cheatography.com/216190/cs/47627/}}}
\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}sally sung \\
  \uline{cheatography.com/sally-sung} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 28th January, 2026.\\
   Updated 28th January, 2026.\\
   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{1.44 cm} x{6.56 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{\seqsplit{HTML-DOM-Methods-n-Properties}}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{innerHTML} & This is a simple heading and \textless{}span style="display: none;"\textgreater{} it shows some \textless{}/span\textgreater{} text on the page \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\seqsplit{innerText} & This is a simple heading and text on the page \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.32 cm} x{5.68 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Essentials-ES6 Refresher}}  \tn
% Row 0
\SetRowColor{LightBackground}
Template Strings & console.log(`\$\{lastName\}, \$\{firstName\} \$\{middleName\}`); \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Arrow Functions & const square = number =\textgreater{} number*number; \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Spread Operator & combined = {[}...first, ...second{]} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
Concat & let combined = first.concat(second); \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Exporting & export class Person \{\} \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.32 cm} x{5.68 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Essentials-ES6 Refresher}}  \tn
% Row 0
\SetRowColor{LightBackground}
Template Strings & console.log(`\$\{lastName\}, \$\{firstName\} \$\{middleName\}`); \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Arrow Functions & const square = number =\textgreater{} number*number; \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Spread Operator & combined = {[}...first, ...second{]} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
Concat & let combined = first.concat(second); \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Exporting & export class Person \{..\} \tn 
% Row Count 9 (+ 1)
% Row 5
\SetRowColor{white}
Import & import \{Person\} from './person'; \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.44 cm} x{6.56 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{JavaScript Functional Programming}}  \tn
% Row 0
\SetRowColor{LightBackground}
Map & const modifiedNumbers = numbers.map((number) =\textgreater{} \{     return number*2 \}) \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
Filter & let berryFruits = fruits.filter(fruit =\textgreater{} \{     return \seqsplit{fruit.includes("berries")} \}) \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
Reduce & let sum = numbers.reduce((acc, now) =\textgreater{} \{     console.log(`previous is \$\{acc\}, now is \$\{now\}`);      return acc + now; //    return acc+now; \}) \tn 
% Row Count 11 (+ 5)
% Row 3
\SetRowColor{white}
Find & let firstBerry = fruits.find(fruit =\textgreater{} \seqsplit{fruit.includes("berries"))} \tn 
% Row Count 13 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{FindIndex} & let firstBerryIndex = fruits.findIndex(fruit =\textgreater{} \seqsplit{fruit.includes("berries"))} \tn 
% Row Count 16 (+ 3)
% Row 5
\SetRowColor{white}
Some & let someFruite5 = fruits.some(fruit =\textgreater{} fruit.length \textgreater{}= 5) \tn 
% Row Count 18 (+ 2)
% Row 6
\SetRowColor{LightBackground}
Every & let everyFruite5 = fruits.every(fruit =\textgreater{} fruit.length \textgreater{}= 5) \tn 
% Row Count 20 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Filter + Map}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{const jobs = {[} \newline \{ id: 101, isActive: true \}, \newline \{ id: 102, isActive: false \}, \newline \{ id: 103, isActive: true \}, \newline \{ id: 103, isActive: false \}, \newline \{ id: 105, isActive: false \}, \newline {]} \newline  \newline const activeJobs = jobs.filter((job) =\textgreater{} job.isActive).map((value)=\textgreater{} \{ \newline     return value.id \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}{JavaScript Functional Programming - Code}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{const totalVowelCount = fruits.reduce((prev,curr)=\textgreater{}\{ \newline     let count = 0; \newline      for(let letter of curr)\{ \newline         if(letter=='a'||letter=='e'||letter=='i'||letter=='o'||letter=='u')\{ \newline             count++; \newline         \} \newline     \} \newline     return prev+count; \newline \},0)} \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}{JavaScript Functional Programming - Code}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{const totalVowelCount = fruits.reduce((acc, now)=\textgreater{} \{ \newline     let count = 0; \newline     for (const char of now) \{ \newline         if \seqsplit{(vowels.includes(char.toLowerCase()))} \{ \newline             count++; \newline         \} \newline     \} \newline     return acc +count \newline \},0)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}