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Chapter 3. Objects

Chapter 3. Objects

Upon a homely object Love can wink.

—William Shakespeare, The Two Gentlemen of Verona

The simple types of JavaScript are numbers, strings, booleans (true and false), null, and undefined. All other values are objects. Numbers, strings, and booleans are object-like in that they have methods, but they are immutable. Objects in JavaScript are mutable keyed collections. In JavaScript, arrays are objects, functions are objects, regular expressions are objects, and, of course, objects are objects.


  

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