What is the reason behind using angle brackets to access the initial value of an array with a variable inside?

I've been experimenting with this technique several times, but I still can't quite grasp why it works and haven't been able to find an answer. Can someone please explain?

let myArray = [0, 1]
let [myVar] = myArray
console.log(myVar) // outputs 0

How does [myVar] equate to the same as putting [0] after myArray?

Edit: I have already asked and received an answer here: Multiple assignment in javascript? What does [a,b,c] = [1, 2, 3]; mean?

Thank you to everyone who has contributed

Answer №1

If you're searching for information on using brackets for destructuring assignment, check out this resource.

In essence, brackets can be utilized to assign individual elements of a structure or array to variables, and this technique supports assigning multiple elements at once.

For example:

let myArray = [0, 1]
let [myVar1, myVar2] = myArray
console.log(myVar1) // prints 0
console.log(myVar2) // prints 1

Just to clarify, the symbols "[]" denote square brackets, while "<>" represent angle brackets.

Answer №2

Have you heard of the concept known as "Destructuring Assignment"? It's a fascinating topic worth exploring.

Learn more about it here!

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