Underscore.js _.best() Method

The _.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 underscore.js contrib library to be installed. 



underscore.js contrib library can be installed using npm install underscore-contrib .

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

Javascript

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

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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.

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

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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.

Javascript

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

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Output:

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

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