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Copy part of an array with slice()

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To copy part of an array:

It returns a new array filled with items from arr.

begin is 0-based index of the first item.

end is 0-based index of the last item

If only begin is given, slice copies everything until the end of array

If end is negative it becomes end = arr.length + end i.e. -1 would leave off last element of array, -2 last 2 elements etc.

if end is ≤ begin, returns an empty array. 

const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];

let newArr = arr.slice(0, 2);
console.log("slice(0,2)  :", newArr)

newArr = arr.slice(8);
console.log("slice(8)    :", newArr)

newArr = arr.slice(5, -1);
console.log("slice(5, -1):", newArr)

newArr = arr.slice(6, -2);
console.log("slice(6, -2):", newArr)

newArr = arr.slice(3, 3)
console.log("slice(3, 3) :", newArr)

newArr = arr.slice(4, 1)
console.log("slice(4, 1) :", newArr)
try online 
slice(0,2)  : [ 0, 1 ]
slice(8)    : [ 8, 9 ]
slice(5, -1): [ 5, 6, 7, 8 ]
slice(6, -2): [ 6, 7 ]
slice(3, 3) : []
slice(4, 1) : []
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Arrays:
* Syntax
* Remarks
* Converting Array-like Objects to Arrays
* Reducing values
* Mapping values
* Filtering Object Arrays
* Sorting Arrays
* Iteration
* Removing duplicate elements
* Destructuring an array
* Array comparison
* Reversing arrays
* Concatenating Arrays
* Shallow cloning an array
* Merge two array as key value pair
* Array spread rest
* Finding the minimum or maximum element
* Removing items from an array
* Filtering values
* Standard array initialization
* Removing all elements
* Searching an Array
* Convert a String to an Array
* Joining array elements in a string
* Removing / adding elements using splice
* The entries() method
* Remove value from array
* Logical connective of values
* Flattening Arrays
* Object keys and values to array
* Append / prepend items to array
* Checking if an object is an array
* Sorting multidimensional array
* Insert an item into an array at a specific index
* Test all array items for equality
* Copy part of an array with slice()
* Using map to reformat objects in an array
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0 Getting started
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97 How to make iterator usable inside async callback function
98 Context this
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105 Contributors