January 2020
Intermediate to advanced
548 pages
13h 36m
English
Content preview from Clean Code in JavaScript
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Property descriptors
When adding properties to objects in the conventional fashion, either via property access or via an object literal, the properties will be given the following implicit traits:
- configurable: This means the property can be deleted from the object (and if its property descriptor can be changed)
- enumerable: This means the property will be visible to enumerations such as for...in and Object.keys()
- writable: This means the property's value can be changed via an assignment operator (such as obj.prop = ...)
JavaScript gives you the power to turn off these traits individually, but be wary that changes to these traits can obscure the behavior of your code. For example, if a property is described as not being writeable but a ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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