‘Deleting’ elements from an array might mean two things: deleting the value for a particular index (or indices) in the array (while still leaving the slot in the array open), or, actually removing a ...
It adds elements to the end of an array and returns the new array length. const arr = [1,2] const length = arr.push(3,4,5) // 5 console.log(arr) // [1,2,3,4,5] It takes two or more arrays, merges them ...
Today, we’re going to peek behind the curtain at a neat little trick to “remove” elements from an array without actually shrinking it. Imagine you have an array ...
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