The _.nth() method is used to return the nth index of the element. For a negative value of n, it returns the nth element from the end.
Syntax:
_.nth(array, n)
Parameters: This method accepts two parameters as mentioned above and described below:
- Array: This parameter holds the query array.
- n: This parameter holds the index of element that to be extracted.
Return Value: It returns the nth element of the array.
Example 1: It returns the third element of an array.
const _ = require('lodash'); Â Â let ar = [1, 2, 3, 4, 5] Â Â let value = _.nth(ar, 3) Â Â console.log(value) |
Here, const _ = require('lodash') is used to import the lodash library into the file.
Output:
4
Example 2: It returns the third element from the end of an array because the value of n is negative.
const _ = require('lodash'); Â Â let ar = [1, 2, 3, 4, 5] Â Â let value = _.nth(ar, -3) Â Â console.log(value) |
Output:
3
Example 3: It returns undefined because there is no element at index 8.
const _ = require('lodash'); Â Â let ar = [1, 2, 3, 4, 5] Â Â let value = _.nth(ar, 8) Â Â console.log(value) |
Output:
undefined
Reference: https://lodash.com/docs/4.17.15#nth
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