What is Array Reference in JS? . Reference variable | address in memory.
In JavaScript, arrays are reference types, meaning that variables do not store the actual array data directly. Instead, they store a reference (a pointer) to the location in memory where the array is stored.
Passing to Functions: Arrays are passed by reference to functions. Changes made to the array inside the function persist outside of it.Equality Checks: Comparing two different arrays using == or === will return false even if they have the same content, because they refer to different locations in memory.
Example:
let arr1 = [1, 2, 3];
let arr2 = arr1; // arr2 now references the same array as arr1
arr2.push(4);
console.log(arr1);
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