deep copy list in js code example

Example 1: deep copy javascript

function copy(arr1, arr2) {
	for (var i =0; i< arr1.length; i++) {
    	arr2[i] = arr1[i];
    }
}
copy(arr1, arr2)

Example 2: js deep copy array

const numbers = [1, [2], [3, [4]], 5];

// Using JavaScript
JSON.parse(JSON.stringify(numbers));

// Using Lodash
_.cloneDeep(numbers);