Table Of ContentJavaScript for Data Science
Chapman & Hall/CRC Data Science Series
About the Series
Reflecting the interdisciplinary nature of the field, this new book series brings together
researchers, practitioners, and instructors from statistics, computer science, machine learn-
ing, and analytics. The series will publish cutting-edge research, industry applications, and
textbooks in data science.
Features:
• Presents the latest research and applications in the field, including new statistical and com-
putational techniques
• Covers a broad range of interdisciplinary topics
• Provides guidance on the use of software for data science, including R, Python, and Julia
• Includes both introductory and advanced material for students and professionals
• Presents concepts while assuming minimal theoretical background
The scope of the series is broad, including titles in machine learning, pattern recognition,
predictive analytics, business analytics, visualization, programming, software, learning analyt-
ics, data collection and wrangling, interactive graphics, reproducible research, and more. The
inclusion of examples, applications, and code implementation is essential.
JavaScript for Data Science
Maya Gans, Toby Hodges, Greg Wilson
Basketball Data Science: With Applications in R
Paola Zuccolotto, Marica Manisera
Cybersecurity Analytics
Rakesh M. Verma, David J. Marchette
Introduction to Data Science: Data Analysis and Prediction Algorithms with R
Rafael A. Irizarry
Feature Engineering and Selection: A Practical Approach for Predictive Models
Max Kuhn, Kjell Johnson
Probability and Statistics for Data Science: Math + R + Data
Norman Matloff
JavaScript for Data Science
Maya Gans
Toby Hodges
Greg Wilson
CRC Press
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Dedication
For Jordan
who taught me failures pave the way to success.
— Maya
For Oskar.
— Toby
For Kara, Claudia, Erin, Gabriela, Hannah, Laura, and Julia.
— Greg
All royalties from the sale of this book are being donated to R-Ladies,
a worldwide organization whose mission is
to promote gender diversity in the R community.
Contents
Chapter 1 Introduction .....................................................................................1
1.1 WhoYouAre..........................................................................1
1.2 Who We Are ...........................................................................2
1.3 Setting Up...............................................................................3
1.4 Contributing............................................................................3
1.4.1 Acknowledgments......................................................4
1.5 Exercises.................................................................................4
Chapter 2 Basic Features..................................................................................5
2.1 Hello, World............................................................................5
2.2 Basic Data Types ....................................................................5
2.3 Control Flow...........................................................................7
2.4 Formatting Strings ..................................................................8
2.5 Objects....................................................................................8
2.6 Functions...............................................................................10
2.7 Modules ................................................................................12
2.8 Exercises...............................................................................13
Chapter 3 Callbacks .......................................................................................19
3.1 The Call Stack.......................................................................19
3.2 Functions of Functions .........................................................20
3.3 Anonymous Functions..........................................................24
3.4 Functional Programming......................................................25
3.5 Closures ................................................................................27
3.6 Exercises...............................................................................30
Chapter 4 Objectsand Classes.......................................................................33
4.1 Doing It By Hand..................................................................33
4.2 Classes ..................................................................................34
4.3 Inheritance ............................................................................36
4.4 Exercises...............................................................................38
Chapter 5 HTML and CSS.............................................................................43
5.1 Formatting.............................................................................43
5.2 Text .......................................................................................43
5.3 Pages.....................................................................................44
5.4 Attributes ..............................................................................45
vii
viii Contents
5.5 Lists.......................................................................................46
5.6 Tables....................................................................................47
5.7 Links.....................................................................................47
5.8 Images...................................................................................48
5.9 Cascading Style Sheets.........................................................49
5.10 Bootstrap...............................................................................51
5.11 Exercises...............................................................................53
Chapter 6 Manipulating Pages .......................................................................55
6.1 Counting Paragraphs.............................................................55
6.2 Creating a Table of Contents ................................................57
6.3 Sortable Lists........................................................................59
6.4 Bibliographic Citations.........................................................62
6.5 A Real-time Clock................................................................66
6.6 Exercises...............................................................................67
Chapter 7 Dynamic Pages..............................................................................69
7.1 Hello, World..........................................................................69
7.2 JSX........................................................................................71
7.3 Creating Components ...........................................................72
7.4 Developing with Parcel.........................................................73
7.5 Multiple Files........................................................................75
7.6 Exercises...............................................................................77
Chapter 8 Visualizing Data ............................................................................79
8.1 Vega-Lite...............................................................................79
8.2 Local Installation..................................................................83
8.3 Exercises...............................................................................84
Chapter 9 Promises ........................................................................................87
9.1 The Execution Queue ...........................................................87
9.2 Promises................................................................................90
9.3 Using Promises.....................................................................94
9.4 async and await..................................................................97
9.5 Exercises...............................................................................98
Chapter 10 Interactive Sites ...........................................................................103
10.1 But It Doesn’t Work............................................................104
10.2 Models and Views...............................................................107
10.3 Fetching Data......................................................................110
10.4 Exercises.............................................................................115
Contents ix
Chapter 11 Managing Data ............................................................................117
11.1 Data Formats.......................................................................117
11.2 Slicing Data ........................................................................118
11.3 Data Manager......................................................................119
11.4 Exercises.............................................................................122
Chapter 12 Creating aServer.........................................................................125
12.1 HTTP ..................................................................................125
12.2 Hello, Express.....................................................................127
12.3 HandlingMultiplePaths.....................................................128
12.4 Serving Files from Disk......................................................129
12.5 ContentTypes.....................................................................131
12.6 Exercises.............................................................................132
Chapter 13 Testing .........................................................................................133
13.1 Introducing Mocha..............................................................133
13.2 Refactoring .........................................................................134
13.3 Testing the Server ...............................................................135
13.4 Checking the HTML...........................................................138
13.5 Exercises.............................................................................139
Chapter 14 Using Data-Forge ........................................................................141
14.1 Basic Operations.................................................................142
14.2 Doing Calculations .............................................................144
14.3 Subsets................................................................................148
14.4 Aggregation ........................................................................150
14.5 In Real Life.........................................................................152
14.6 Exercises.............................................................................155
Chapter 15 Capstone Project..........................................................................157
15.1 Data Manager......................................................................157
15.2 Server..................................................................................160
15.3 API......................................................................................161
15.4 The Display.........................................................................162
15.5 The Tables...........................................................................165
15.6 TheChart............................................................................167
15.7 RunningIt...........................................................................168
15.8 Exercises.............................................................................171
Chapter 16 Finale...........................................................................................173
Bibliography .........................................................................................................175
