Robert Jeansoulin, CNRS, France.

• Introduction xiiiPart 1. Core JavaScript 1Introduction to Part 1 3Chapter 1. Variables: Declaration, Definition and Type 51.1. Declarations of functions and variables 61.1.1. The different declaration keywords 61.1.2. Lexical scope and definition of a variable according to declaration mode: var, let, const 91.1.3. Comments (important improvements carried over by ES6) 111.1.4. General conclusion about the variable declarations in JavaScript 111.1.5. Naming variables and functions: best practices 141.2. Variable definition, initialization and typing in JavaScript 151.2.1. Variables initialization and definition 151.2.2. Types 151.2.3. How to use the type “undefined” and the value undefined 17Chapter 2. Controls: Booleans, Branch and Loops 192.1. Truth values and boolean operators 192.1.1. Boolean operators: “!” (not), “&&” (and), “||” (or) 192.1.2. Relational operators: >, <, >=,

Robert Jeansoulin, CNRS, France.

• Introduction xiiiPart 1. Core JavaScript 1Introduction to Part 1 3Chapter 1. Variables: Declaration, Definition and Type 51.1. Declarations of functions and variables 61.1.1. The different declaration keywords 61.1.2. Lexical scope and definition of a variable according to declaration mode: var, let, const 91.1.3. Comments (important improvements carried over by ES6) 111.1.4. General conclusion about the variable declarations in JavaScript 111.1.5. Naming variables and functions: best practices 141.2. Variable definition, initialization and typing in JavaScript 151.2.1. Variables initialization and definition 151.2.2. Types 151.2.3. How to use the type “undefined” and the value undefined 17Chapter 2. Controls: Booleans, Branch and Loops 192.1. Truth values and boolean operators 192.1.1. Boolean operators: “!” (not), “&&” (and), “||” (or) 192.1.2. Relational operators: >, <, >=,

Robert Jeansoulin, CNRS, France.

• Introduction xiiiPart 1. Core JavaScript 1Introduction to Part 1 3Chapter 1. Variables: Declaration, Definition and Type 51.1. Declarations of functions and variables 61.1.1. The different declaration keywords 61.1.2. Lexical scope and definition of a variable according to declaration mode: var, let, const 91.1.3. Comments (important improvements carried over by ES6) 111.1.4. General conclusion about the variable declarations in JavaScript 111.1.5. Naming variables and functions: best practices 141.2. Variable definition, initialization and typing in JavaScript 151.2.1. Variables initialization and definition 151.2.2. Types 151.2.3. How to use the type “undefined” and the value undefined 17Chapter 2. Controls: Booleans, Branch and Loops 192.1. Truth values and boolean operators 192.1.1. Boolean operators: “!” (not), “&&” (and), “||” (or) 192.1.2. Relational operators: >, <, >=,