Essential Books

Converting Non-numeric values to Numbers

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~~ Could be used on non-numeric values. A numeric expression will be first converted to a number and then performed bitwise NOT operation on it.

If expression cannot be converted to numeric value, it will convert to 0.

true and false bool values are exceptions, where true is presented as numeric value 1 and false as 0 

let a = ~~"-2";     // a is now -2
let b = ~~"1";      // b is now -1
let c = ~~"0";      // c is now 0
let d = ~~"true";   // d is now 0
let e = ~~"false";  // e is now 0
let f = ~~true;     // f is now 1
let g = ~~false;    // g is now 0
let h = ~~"";       // h is now 0
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* Tilde
* Integer
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* Converting Non-numeric values to Numbers
* Shorthands
* Decimal
Table Of Contents
0 Getting started
1 Comments
2 Basic data types
3 Built-in constants
4 Variables
5 Declarations and assignments
6 Reserved keywords
7 Data types in JavaScript
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55 Async functions, async / await
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58 Performance Tips
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63 File API, blobs and FileReaders
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66 Detecting browser
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81 Automatic Semicolon Insertion
82 IndexedDB
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84 Navigator Object
85 Modularization techniques
86 Proxy
87 Same origin policy, cross-origin communication
88 postMessage and MessageEvent
89 WeakMap
90 WeakSet
91 Behaviroal Design Patterns
92 Server-sent events
93 Async iterators
94 Namespacing
95 Evaluating JavaScript
96 Memory efficiency
97 How to make iterator usable inside async callback function
98 Context this
99 Setters and getters
100 Vibration API
101 Fluent API
102 Tilde
103 Security issues
104 Get and set CSS custom variables
105 Contributors