How Can I Create a Truly Independent Copy of a JavaScript Array?

Creating a Truly Independent Array Copy

JavaScript's array copying behavior can be confusing, as shown in the example:

var arr1 = ['a', 'b', 'c'];
var arr2 = arr1;
arr2.push('d'); // arr1 now becomes ['a', 'b', 'c', 'd']

To create truly independent arrays, you need to use a method that creates a new array instead of referencing the original one. The solution lies in using the slice() method:

let oldArray = [1, 2, 3, 4, 5];

let newArray = oldArray.slice();

console.log({newArray});

The slice() method returns a new array with the same elements as the original array, but without modifying the original array. Hence, any changes made to the new array will not affect the old array, ensuring independence.

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