\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{itsMe}
\pdfinfo{
  /Title (corejs-interview1.pdf)
  /Creator (Cheatography)
  /Author (itsMe)
  /Subject (CoreJS Interview1 Cheat Sheet)
}

% Lengths and widths
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\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}{FF3300}
\definecolor{LightBackground}{HTML}{FFF2EF}
\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{CoreJS Interview1 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{itsMe} via \textcolor{DarkBackground}{\uline{cheatography.com/189476/cs/39515/}}}
\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}itsMe \\
  \uline{cheatography.com/itsme} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 9th July, 2023.\\
   Updated 9th July, 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*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JS Basics}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Falsy ⇒ '', 0, null, undefined, NaN, fals} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{var - hoisting, let, const - blocks} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Temporal Dead Zone начинается в начале области видимости переменной и \seqsplit{заканчивается} ее объявлением} \tn 
% Row Count 6 (+ 4)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Primitives}}:          {\bf{`Undefined}}, {\bf{Boolean, String, Symbol, BigInt, Null}}`} \tn 
% Row Count 8 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Non Primotives:}}     \newline Object, Array, Function, RegExp, Date, Map, Set, \newline  Error, Promise, enum}  \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}{Strings}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{`text.length`}} \newline % Row Count 1 (+ 1)
{\bf{`text.slice(start, end)`}}  =\textgreater{} new string  {[}start, end) \newline % Row Count 3 (+ 2)
`text.substring(start, end)` new string  {[}start, end) \newline % Row Count 5 (+ 2)
`text.substr(start, length)` new string  {[}start... `length` number of characters. \newline % Row Count 7 (+ 2)
`text.replace(oldValue, newValue)` \seqsplit{`text.replaceAll(oldValue}, newValue)` \newline % Row Count 9 (+ 2)
`text.toUpperCase()` `text.toLowerCase()` \newline % Row Count 10 (+ 1)
`concat(string1, string2, ..., stringN)` \newline % Row Count 11 (+ 1)
`text.trim()` `trimStart()` `trimEnd()` \newline % Row Count 12 (+ 1)
`padStart(targetLength, padString)`: adds padding to the beginning \newline % Row Count 14 (+ 2)
`padEnd(targetLength, padString)`:adds padding to the end  \newline % Row Count 16 (+ 2)
`charAt(index)` `charCodeAt(index)` \newline % Row Count 17 (+ 1)
{\bf{`split(separator, limit)`}}% Row Count 18 (+ 1)
} \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}{Timers}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Методы setInterval(func, delay, ...args) и setTimeout(func, delay, ...args) позволяют выполнять func регулярно или только один раз после задержки delay, заданной в мс.} \tn 
% Row Count 5 (+ 5)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{ля отмены выполнения необходимо вызвать \seqsplit{clearInterval/clearTimeout} со значением, которое возвращают методы setInterval/setTimeout.} \tn 
% Row Count 9 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Планирование с нулевой задержкой setTimeout(func,0) или, что то же самое, setTimeout(func) используется для вызовов, которые должны быть исполнены как можно скорее, после завершения исполнения текущего кода.} \tn 
% Row Count 16 (+ 7)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Браузер ограничивает 4-мя мс минимальную задержку между пятью и более вложенными вызовами setTimeout, а также для setInterval, начиная с 5-го вызова.} \tn 
% Row Count 21 (+ 5)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`let timerId = setTimeout(...); clearTimeout(timerId);`} \tn 
% Row Count 23 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Objects}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Creating Objects}} \newline % Row Count 1 (+ 1)
Literal/ Contructor Function/ Class \newline % Row Count 2 (+ 1)
`\{x: "y"\}`  `(new) function()\{\}`  `new Object() same as \{\}`   `class Banana \{\}` `Object.create(``proto{[}, propertiesObject{]})` \newline % Row Count 5 (+ 3)
{\bf{`delete book.usersReading`}} \newline % Row Count 6 (+ 1)
{\bf{Обход объекта}} \newline % Row Count 7 (+ 1)
{\bf{`for (let key in myObject)` `Object.entries() =\textgreater{}}} {[}key, value{]}` \newline % Row Count 9 (+ 2)
{\bf{`Object.keys()}} ⇒ {[}key{]}` {\bf{`Object.values()}} =\textgreater{}{[}values{]}` \newline % Row Count 11 (+ 2)
{\bf{Методы}} \newline % Row Count 12 (+ 1)
`someObj.hasOwnProperty{\bf{(}}'key1'{\bf{)`}}   \newline % Row Count 13 (+ 1)
`obj.\_\_{\bf{proto\_\_}} === person` ⇒ \seqsplit{`Object.getPrototypeOf(object1)`}  \seqsplit{`Object.setPrototypeOf(object1)`} \newline % Row Count 16 (+ 3)
The {\bf{`valueOf()`}} method of `{[}Object{]}` instances converts the `this` value {[}to an object{]}% Row Count 18 (+ 2)
} \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}{Object.create()}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{function MyClass() \{ \newline   SuperClass.call(this); \newline   \seqsplit{OtherSuperClass.call(this);} \newline \} \newline MyClass.prototype = \seqsplit{Object.create(SuperClass.prototype);}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{позволяет создавать новый объект и \seqsplit{устанавливать} прототип этого объекта в объект, переданный в качестве параметра}  \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}{Events}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Event Phases - это три фазы жизненного цикла события: захват (capturing), цель (target) и всплытие (bubbling).} \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Разница между этими фазами заключается в порядке вызова обработчиков событий. В фазе захвата обработчики вызываются сверху вниз, а в фазе всплытия - снизу вверх. В фазе цели вызывается только один обработчик, связанный с элементом цели.} \tn 
% Row Count 13 (+ 9)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Mouse Events: - click - dblclick - mousedown - mouseup - mousemove - mouseover - mouseout - contextmenu} \tn 
% Row Count 16 (+ 3)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Keyboard Events: - keydown - keyup - keypress} \tn 
% Row Count 17 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Form: formdata reset submit;} \tn 
% Row Count 18 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Input:change, input, cut, copy, paste} \tn 
% Row Count 19 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Array NOT Mutating}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`concat(array1, array2, ..., arrayN): new Array` \newline `array.filter(callback(el, ind, array), thisArg): new Array` \newline `array.map(callback(elt, ind, array), thisArg): new Array` \newline `array.slice(start, end): new Array` \newline `array.reduce(callback(acc, cur, i, array), initi): any` \newline `reduceRight(callback(acc, cur, i, array), init): any`} \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}{Array Mutations}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`push(element1, element2, ..., elementN)` \newline % Row Count 1 (+ 1)
`pop()` \newline % Row Count 2 (+ 1)
`shift()` \newline % Row Count 3 (+ 1)
`unshift(element1, element2, ..., elementN)` \newline % Row Count 4 (+ 1)
`splice(start, deleteCount, item1, item2, ..., itemN)` \newline % Row Count 6 (+ 2)
`sort(compareFunction)` \newline % Row Count 7 (+ 1)
`reverse()` \newline % Row Count 8 (+ 1)
`fill(value, start, end)`% Row Count 9 (+ 1)
} \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}{Iterate Array}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{for (let i = 0; i \textless{} scores.length; i++) \{\} \newline for (i in scores) \{\} \newline for (score of scores) \{\} \newline scores.forEach((score) =\textgreater{} \{\}); \newline every(function (element, index, array) \{ /{\emph{ … }}/ \}, thisArg) \newline array.reduce( function(total, el, i, arr),initialValue ) \newline every(function (element, index, array) \{ /{\emph{ … }}/ \}, thisArg)} \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}{Copy Array}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{const arrNew = {[}...arrOld{]}; \newline const newArray = {[}...oldArray{]}; \newline \{ const json = \seqsplit{JSON.stringify(oldArray);} \newline const newArray = JSON.parse(json); \} \newline const arrNew = arrOld.slice(); \newline const arrNew = Array.from(arrOld); \newline const arrNew = {[}{]}.concat(arrOld);} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}