In JavaScript, you can create a deep copy of an array using various methods.
Here are three common ways to achieve this:
Method 1: Using the spread operator:
let originalArray = [1, 2, 3, [4, 5]];
let copiedArray = [...originalArray];This method creates a new array and copies all the elements of the original array into it. It also creates a new copy of nested arrays or objects within the original array.
Method 2: Using the slice() method:
let originalArray = [1, 2, 3, [4, 5]];
let copiedArray = originalArray.slice(0);The slice() method creates a new array and returns a copy of the original array. This method also creates a new copy of nested arrays or objects within the original array.
Method 3: Using JSON.parse() and JSON.stringify() methods:
let originalArray = [1, 2, 3, [4, 5]];
let copiedArray = JSON.parse(JSON.stringify(originalArray));This method converts the original array into a string using JSON.stringify(), then parses the string back into an array using JSON.parse(). This creates a new copy of the original array and nested arrays or objects within it.
It’s important to note that the third method can be slow for large arrays, and it may not preserve all data types and functions within the original array. Therefore, it’s recommended to use the first or second method for most cases.
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