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Learning TypeScript 2.x - Second Edition
book

Learning TypeScript 2.x - Second Edition

by Remo H. Jansen
April 2018
Beginner content levelBeginner
536 pages
13h 21m
English
Packt Publishing
Content preview from Learning TypeScript 2.x - Second Edition

Accessing the prototype of an object

Prototypes can be accessed in three different ways:

  • Person.prototype
  • Object.getPrototypeOf(person)
  • person.__proto__
The use of __proto__ is controversial and has been discouraged by many experienced software engineers. It was never originally included in the ECMAScript language specification, but modern browsers decided to implement it anyway. Today, the __proto__ property has been standardized in the ECMAScript 6 language specification and will be supported in the future, but it is still a slow operation that should be avoided if performance is a concern.
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Publisher Resources

ISBN: 9781788391474Supplemental Content