Lodash _.best() Method

The Lodash _.best() method takes an array and a function and generates the best suitable value from that array using the conditions of the function.

Syntax:

_.best(array, function)

Parameters: This method accepts two parameters as mentioned above and described below:

• array: The given array from which the best value is calculated.
• function: The function which contains the condition for the best matching value.

Return Value: This method returns the best value from the array.

Note: This will not work in normal JavaScript because it requires the lodash contrib library to be installed. 

Module Installation: Lodash contrib library can be installed using the following command:

npm install lodash-contrib –save

Example 1: In this example, we will get the best value as the greatest value from the array.

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Array
var array = [11, 2, 43, 14, 12];

// Getting best value using best() method
var best_val = _.best(array, function(x, y) {
    return x > y;
});

console.log("Array : ", array);
console.log("Best value : ", best_val);

Output:

Array :  [ 11, 2, 43, 14, 12 ]
Best value :  43

Example 2: In this example, we will get the best value as the smallest value from the array.

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Array
var array = [11, 2, 43, 14, 12];

// Getting best value using best() method
var best_val = _.best(array, function(x, y) {
    return x < y;
});

console.log("Array : ", array);
console.log("Best value : ", best_val);

Output:

Array :  [ 11, 2, 43, 14, 12 ]
Best value :  2

Example 3: In this example, we will get the best matching value as 12 from the array.

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Array
var array = [11, 2, 43, 14, 12];

// Getting best value using best() method
var best_val = _.best(array, function(x) {
    return x == 12;
});

console.log("Array : ", array);
console.log("Best value : ", best_val);

Output:

Array :  [ 11, 2, 43, 14, 12 ]
Best value :  12