\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{ott}
\pdfinfo{
  /Title (javascript-typescript.pdf)
  /Creator (Cheatography)
  /Author (ott)
  /Subject (JavaScript / TypeScript Cheat Sheet)
}

% Lengths and widths
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\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
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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 / TypeScript Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{ott} via \textcolor{DarkBackground}{\uline{cheatography.com/62692/cs/16054/}}}
\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}ott \\
  \uline{cheatography.com/ott} \\
  \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 10th June, 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{tabularx}{17.67cm}{p{3.6267 cm} x{13.6433 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{宣告 / Declare}}  \tn
% Row 0
\SetRowColor{LightBackground}
var & 常數, 變數, 函 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
let & 變數, 函式 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
const & 常數, 函式 \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{5.7358 cm} x{5.3984 cm} x{5.7358 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{17.67cm}}{\bf\textcolor{white}{函式 / Function (copy)}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{函式宣告數(Function} Declaration) & function A(參數) \{ 定義 \} & \seqsplit{不管定義寫在哪，執行時都會被移到最前面，因此到處都可以呼叫，不用管寫程式時的先後順序。} \tn 
% Row Count 10 (+ 10)
% Row 1
\SetRowColor{white}
\seqsplit{具名函式表達式(Function} Expression) & let a = function A(參數) \{ 定義 \}; & \seqsplit{須在前面定義，後面才能呼叫。函式名稱只有在此函式的定義內有效，很沒用。} \tn 
% Row Count 19 (+ 9)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{匿名函式表達式(Function} Expression) & let a = \seqsplit{function(參數)} \{ 定義 \}; & \seqsplit{須在前面定義，後面才能呼叫。} \tn 
% Row Count 23 (+ 4)
% Row 3
\SetRowColor{white}
\seqsplit{立即函式(Immediately-Invoked} Function \seqsplit{Expression/IIFE)} & (function(參數)\{ 定義 \})(參數); & \seqsplit{會立刻執行，適合將} Init \seqsplit{的東西寫在裡面，再放在適當位置。} \tn 
% Row Count 30 (+ 7)
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{5.7358 cm} x{5.3984 cm} x{5.7358 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{17.67cm}}{\bf\textcolor{white}{函式 / Function (copy) (cont)}}  \tn
% Row 4
\SetRowColor{LightBackground}
\seqsplit{箭頭函式(Arrow} Function) & let a = (參數) =\textgreater{} \{定義\}; & \seqsplit{函式裡的this，是指向定義時的對象，而不是運行時的對象。也可以說箭頭函式內部，並不會配置一個自己的this。} \tn 
% Row Count 12 (+ 12)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{9.4985 cm} x{7.7715 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{函式參數 / Function Parameter}}  \tn
% Row 0
\SetRowColor{LightBackground}
少傳的參數 & 自動填入 undefined \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
多傳的參數 & 自動忽略 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{參數預設值(Default} parameter) & function A(name = 'Mark') \{\} \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
其餘參數(Rest Parameter) & function A(...args) \{\} \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{\seqsplit{函式可以當成參數傳入}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{設定函式的 this 對象}}  \tn
% Row 0
\SetRowColor{LightBackground}
函式.call(對象, 參數1, 參數2, ...) & \seqsplit{適用情境：確定參數數量的時候，立刻執行。} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
函式.apply(對象, 參數陣列) & \seqsplit{適用情境：不確定參數數量的時候，立刻執行。} \tn 
% Row Count 7 (+ 4)
% Row 2
\SetRowColor{LightBackground}
函式. bind(對象, 參數1, 參數2, ...) & \seqsplit{適用情境：想得到一個設定後函式} \tn 
% Row Count 10 (+ 3)
% Row 3
\SetRowColor{white}
函式. bind(對象, 參數1, 參數2, ...)() & \seqsplit{加上()可以讓回傳的參數立刻執行} \tn 
% Row Count 13 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{{[}備註{]} \newline call 立刻執行 \newline apply 立刻執行 \newline bind \seqsplit{回傳一個設定後的函式} \newline  \newline {[}參考資料{]} \newline 【优雅代码】深入浅出 \seqsplit{妙用Javascript中apply、call、bind} \newline https://www.cnblogs.com/coco1s/p/4833199.html}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{轉型 / Type Casting}}  \tn
% Row 0
\SetRowColor{LightBackground}
數字.toString() & 數字轉字串 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Sring(數字) & 數字轉字串 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
Number(字串) & 字串轉數字 \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
parseInt(字串) & 字串轉數字 \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
parseFloat(字串) & 字串轉浮點數 \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{字串}}  \tn
% Row 0
\SetRowColor{LightBackground}
單引號 & let a = 'Hi'; \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
雙引號 & let a = "Hi"; \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
多行字串 & let a = `Hi`; \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
樣板字串 & let b = 10; let a = `Hi \$\{b\}`; \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
字串.length & 取得字串長度 \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
字串.trim() & 去空白 \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\seqsplit{字串.indexOf(搜尋的字串}, 搜尋起始索引) & \seqsplit{搜尋，找不到會回傳-1，找到會回傳第一個符合的位置。(第二個參數非必要)} \tn 
% Row Count 12 (+ 5)
% Row 7
\SetRowColor{white}
\seqsplit{字串.slice(起始索引}, 結束索引) & \seqsplit{子字串，索引從0開始，不包含結束索引的字元。} \tn 
% Row Count 16 (+ 4)
% Row 8
\SetRowColor{LightBackground}
\seqsplit{字串.replace(原字串}, 新字串) & \seqsplit{取代所有符合的字串} \tn 
% Row Count 18 (+ 2)
% Row 9
\SetRowColor{white}
\seqsplit{字串.split(切割詞)} & 分割字串 \tn 
% Row Count 20 (+ 2)
% Row 10
\SetRowColor{LightBackground}
\seqsplit{字串.toLowerCase()} & 轉小寫 \tn 
% Row Count 21 (+ 1)
% Row 11
\SetRowColor{white}
\seqsplit{字串.toUpperCase()} & 轉大寫 \tn 
% Row Count 22 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{陣列 / Array}}  \tn
% Row 0
\SetRowColor{LightBackground}
宣告 & let a = {[}{]}; \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
遍歷 & \seqsplit{a.forEach(function()} \{  \}); \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{陣列序列化(逗號分隔)} & let c =a.toString(); \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{合併陣列內元素} & let c = \seqsplit{a.join(合併符號)} \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
合併多個陣列 & let c = a.concat(b); \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
\seqsplit{插入/刪除元素(return:} 被刪除的值) & let c = \seqsplit{a.splice(起始索引}, \seqsplit{取代數量/可以是0}, 元素/非必要); \tn 
% Row Count 12 (+ 4)
% Row 6
\SetRowColor{LightBackground}
新增元素(頭) & a.unshift(元素); \tn 
% Row Count 13 (+ 1)
% Row 7
\SetRowColor{white}
新增元素(尾) & a.push(元素); \tn 
% Row Count 14 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\seqsplit{取得第一個元素(並移除)} & let c = a.shift(); \tn 
% Row Count 16 (+ 2)
% Row 9
\SetRowColor{white}
\seqsplit{取得最後一個元素(並移除)} & let c = a.pop(); \tn 
% Row Count 18 (+ 2)
% Row 10
\SetRowColor{LightBackground}
反轉陣列 & let c = a.reverse(); \tn 
% Row Count 19 (+ 1)
% Row 11
\SetRowColor{white}
切割陣列 & let c = a.slice(頭, 尾); \tn 
% Row Count 21 (+ 2)
% Row 12
\SetRowColor{LightBackground}
排序 & let c = a.sort(); \tn 
% Row Count 22 (+ 1)
% Row 13
\SetRowColor{white}
\seqsplit{是否包含(true/false)} & let c =a.includes(值); \tn 
% Row Count 24 (+ 2)
% Row 14
\SetRowColor{LightBackground}
\seqsplit{至少有一個元素符合(true/false)} & let c =a.some(函數); \tn 
% Row Count 26 (+ 2)
% Row 15
\SetRowColor{white}
\seqsplit{所有元素都必須符合(true/false)} & let c =a.every(函數); \tn 
% Row Count 28 (+ 2)
% Row 16
\SetRowColor{LightBackground}
\seqsplit{符合的第一個元素(return:} undefied/值) & let c =a.find(函數); \tn 
% Row Count 31 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{陣列 / Array (cont)}}  \tn
% Row 17
\SetRowColor{LightBackground}
\seqsplit{符合的所有元素(return:} 陣列) & let c =a.filter(函數); \tn 
% Row Count 2 (+ 2)
% Row 18
\SetRowColor{white}
加總 & let c = \seqsplit{a.reduce(初始值/加總值}, 當前值); \tn 
% Row Count 5 (+ 3)
% Row 19
\SetRowColor{LightBackground}
\seqsplit{得到處理後的新陣列} & let c = a.map(函數); \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{\seqsplit{陣列內容不限定單一型態} \newline  \newline {[}範例{]} 找出偶數 \newline let a = {[}0,1,2,3,5,6,7,8,9{]}; \newline let c = a.filter(x =\textgreater{} x\%2 == 0);}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}



\end{document}