how to use the methods function from the underscore library in javascript

The Underscore library provides a variety of useful methods for manipulating arrays, objects, and other data structures in JavaScript. One of its most powerful features is its support for functional programming, allowing you to chain together a series of methods to transform data in a declarative manner.

To use the methods function from Underscore, you'll first need to include the library in your project. You can do this by downloading the library from the Underscore website or by including it via a package manager like npm.

Once you have the library loaded into your project, you can use the methods function to retrieve an array of all the methods provided by Underscore. Here's an example:

index.tsx
const _ = require('underscore');

const allMethods = _.methods();
console.log(allMethods);
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This will log an array of all the available methods in Underscore. You can then use these methods to manipulate and transform your data as needed.

For example, here's how you could use several Underscore methods together to filter out all of the even numbers in an array:

index.tsx
const _ = require('underscore');

const numbers = [1, 2, 3, 4, 5, 6];
const evens = _.filter(numbers, n => n % 2 === 0);
console.log(evens);
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This will log an array containing only the even numbers from the numbers array.

In summary, Underscore provides a powerful set of tools for manipulating data in JavaScript, and the methods function can be used to get an array of all the available methods provided by the library.