Number formatting

Number formatting, grouping digits according to the localization.

const usNumberFormat = new Intl.NumberFormat('en-US');
const esNumberFormat = new Intl.NumberFormat('es-ES');

const usNumber = usNumberFormat.format(99999999.99); // "99,999,999.99"
const esNumber = esNumberFormat.format(99999999.99); // "99.999.999,99"

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Localization:

*Number formatting

*Currency formatting

*Date and time formatting

Table Of Contents

0Getting started

2Basic data types

3Built-in constants

5Declarations and assignments

6Reserved keywords

7Data types in JavaScript

9Escape sequences

10Template Literals

13Prototypes objects

15Variable coercion / conversion

18Arithmetic Math

19Bitwise operators

20Bitwise operators

21Unary Operators

22Comparison operations

26Arrow functions

28Date comparison

32Regular Expression

33Error Handling

36Intervals and timeouts

38History of visited urls

40Custom Elements

49Destructuring assignment

52Notifications API

54Web Cryptography API

55Async functions, async / await

56Constructor functions

57execCommand and contenteditable

58Performance Tips

59Design patterns

60requestAnimationFrame

61Method chaining

62Global error handling in browsers

63File API, blobs and FileReaders

65Tail call optimization

66Detecting browser

69Localization

70Selection API

72Functional JavaScript

74Data attributes

77Data manipulation

78BOM Browser Object Model

80Linters for ensuring code quality

81Automatic Semicolon Insertion

83Anti-patterns

84Navigator Object

85Modularization techniques

87Same origin policy, cross-origin communication

88postMessage and MessageEvent

91Behaviroal Design Patterns

92Server-sent events

93Async iterators

95Evaluating JavaScript

96Memory efficiency

97How to make iterator usable inside async callback function

99Setters and getters

100Vibration API

103Security issues

104Get and set CSS custom variables

105Contributors