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

The initial function from the Underscore library in JavaScript returns all the elements of an array except for the last one. Here's an example of how to use the initial function in JavaScript:

index.tsx
// Importing Underscore library
const _ = require('underscore');

// Defining an array with 5 elements
const myArray = [1, 2, 3, 4, 5];

// Using the initial function from Underscore library to get all elements except the last one
const allButLast = _.initial(myArray);

console.log(allButLast); // Output: [1, 2, 3, 4]
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In the above example, we have used the initial function from the Underscore library to get all elements of the myArray except the last one. The function returns a new array containing all the elements except for the last one.

The require statement is used to import the Underscore library into our code. We then define an array with five elements and use the _.initial() function to get all the elements except for the last one.

The initial function is an example of a higher-order function in JavaScript that takes a function as input and returns a new function as output. It is also an example of functional programming, where functions are used to solve problems instead of using traditional imperative programming techniques.