let array = [1,2,3,4,5,6,7,8,9,0]This is an example of how documentation might look
[first, ...rest] = array will give you 1 and the rest of the array
My question now is whether it is possible to only extract the first and last elements 1 & 0 using Destructuring
For instance: [first, ...middle, last] = array
I already know how to do this in a different way, but I am curious if it can be done with ES6.
The rest parameter allows you to gather all remaining arguments in a function into an array. However, it can only be used at the end and not anywhere else in destructuring.
Alternatively, you can destructure specific properties of an object (arrays are objects too in JavaScript), such as using index 0 for the first element and the length minus 1 for the last element.
let array = [1,2,3,4,5,6,7,8,9,0]
let {0 : firstElement ,[array.length - 1] : lastElement} = array;
console.log(firstElement, lastElement)Another way is to extract the length as another variable and use that to access the last value directly, even without a variable referring to the array.
let {0 : first ,length : len, [len - 1] : last} = [1,2,3,4,5,6,7,8,9,0];
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