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

To use the first function from the Underscore library, you first need to include the library in your JavaScript file. You can download the library from the official website or include it using a Content Delivery Network (CDN). Here is an example of how to include the library using a CDN:

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.13.1/underscore-min.js"></script>
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Once you have included the library, you can use the first function to get the first element of an array. Here is an example:

index.tsx
const numbers = [1, 2, 3, 4, 5];
const firstNumber = _.first(numbers);
console.log(firstNumber); // Output: 1
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In this example, we have an array of numbers and we use the first function to get the first number in the array. The first function returns the first element of the array or undefined if the array is empty.