JavaScript: Closures & Prototypes
ECMAscript 2019
| Intermediate
- 14 Videos | 1h 34m 24s
- Includes Assessment
- Earns a Badge
This 14-video course covers closures—the bundle of a function along with its enclosing environment—and its implications on factors such as variable scopes and function references. Key concepts covered here include what makes up a closure in Javascript; learning how variables of the same name inside closures and in scopes outside them are accessed by functions; and distinguishing between variables of the same name inside functions, within closures, and ones defined in a global scope. Begin by observing how to implement counter functions with closures; how to integrate closures with buttons on web pages; and how closures can be created within objects and implications on your code. Next, learn how closures created within loops interact with variables defined within and outside the loop; how to implement getter and setter functions for Javascript objects using closures; and learn when to use prototypes for objects and how to define them. Finally, observe how to distinguish between object prototypes and classes; learn to use prototypes to implement inheritance; and implement multiple levels of inheritance with prototypes.
WHAT YOU WILL LEARN
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discover the key concepts covered in this course
recognize what makes up a closure in JavaScript
recall how variables of the same name inside closures and in scopes outside them are accessed by functions
distinguish between variables of the same name inside functions, within the closure, and ones defined in a global scope
implement counter functions with closures
integrate closures with buttons on a web page
recognize how closures can be created within objects and its implications on your code -
recognize how closures created within loops interact with variables defined within and outside the loop
implement getter and setter functions for JavaScript objects using closures
identify when to use prototypes for JavaScript objects and how they can be defined
distinguish between object prototypes and classes in JavaScript
use prototypes to implement inheritance in JavaScript
implement multiple levels of inheritance using prototypes
summarize the key concepts covered in this course
IN THIS COURSE
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1.Course Overview2m 10sUP NEXT
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2.An Introduction to Closures9m 45s
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3.Closures and Variables in Outer Scopes6m 40s
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4.Closures and Variables in Nested Functions8m 32s
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5.Closures and Counters5m 33s
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6.Closures and Web Page Elements8m 26s
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7.Closures and Objects7m 57s
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8.Closures and Loops5m 47s
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9.Getters and Setters Using Closures4m 23s
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10.An Introduction to Prototypes7m 39s
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11.Prototypes and Classes8m 5s
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12.Basic Inheritance Using Prototypes7m 34s
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13.Multi-level Inheritance with Prototypes4m 33s
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14.Course Summary1m 20s
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