Quick JavaScript Tip: Storing unique data using Sets

Published April 13, 2020, 1 min read, tagged as: javascriptcodequick tip

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Quick JavaScript Tip: Sets in JavaScript are a great way to store unique values. You can even convert Arrays to Sets to deduplicate them.

const pets = [
	'cat',
	'dog',
	'rabbit',
	'dog',
	'parrot'
]

const uniquePets = new Set(pets) // {'cat', 'dog', 'rabbit', 'parrot'}

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Quick JavaScript Tip: Overwriting an array's length property gives us an easy way to truncate and clear its content.

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