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Is it possible to nest destructuring?
E.g. I want the first item in an array and in that array I want the first item of that child array.
Given:
let arr = [['foo'], ['bar']];
Is there an easier way to do:
let firstItem = arr[0][0];
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Destructuring means to break down a complex structure into simpler parts. With the syntax of destructuring, you can extract smaller fragments from objects and arrays. It can be used for assignments and declaration of a variable.
Destructuring nested objectsIf we need to access an employee's info we can destructure as many levels as it takes to get to our employee object's properties. const { engineers: { 1: { id, name, occupation, }, }, } = employees; Now we have access to all of the second employee object's properties.
Destructuring in Arrays. To destructure an array in JavaScript, we use the square brackets [] to store the variable name which will be assigned to the name of the array storing the element. const [var1, var2, ...]
Ah figured this out:
let [[firstItem]] = arr;
That would be the equivalent.
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