The _.head() method is used to get the first element of an array.
Syntax
_.head( array )
Parameters: This method accepts single parameter as mentioned above and described below:
- array: This parameter holds the query array.
Return Value: It returns the first element of the array.
Example 1:
const _ = require('lodash'); let ar = [1, 2, 3, 4, 5] let first = _.head(ar); console.log(first) |
Output:
1
Example 2:
const _ = require('lodash'); let ar = [{a: 1, b: 2}, {c: 3, d:4}, {e: 5, f: 6}] let first = _.head(ar); console.log(first) |
Output:
{ a: 1, b: 2 }
Example 3:
const _ = require('lodash'); let ar = [] let first = _.head(ar); console.log(first) |
Output:
undefined
Note: The _.head() method on an empty array returns undefined.
Note: This will not work in normal JavaScript because it requires the library lodash to be installed.
Reference: https://lodash.com/docs/4.17.15#head
