Lodash _.head() Method
Lodash _.head() method is used to get the first element of an array.
Syntax
_.head( array );
Parameters:
- array: This parameter holds the query array.
Return Value:
It returns the first element of the array.
Example 1: In this example, we are getting the first element of the given array by the use of the _.head() method.
javascript
const _ = require( 'lodash' ); let ar = [1, 2, 3, 4, 5] let first = _.head(ar); console.log(first) |
Output:
1
Example 2: In this example, we are getting the first element of the given array of objects by the use of the _.head() method.
javascript
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: In this example, we are getting undefined as the given arrray is empty.
javascript
const _ = require( 'lodash' ); let ar = [] let first = _.head(ar); console.log(first) |
Output:
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
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