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

To use the _.valueOf() function from the Underscore library in JavaScript, you would first need to include the Underscore library in your project. This can be done by including the Underscore library script file in your HTML file:

<script src="underscore.js"></script>
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Once you have included the Underscore library, you can use the _.valueOf() function in your JavaScript code. The _.valueOf() function is used to extract the primitive value of an object. Here is an example of how to use the _.valueOf() function:

index.tsx
var numObj = new Number(42);
console.log(numObj.valueOf()); // Output: 42
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In this example, we create a new Number object and assign it to the numObj variable. We then use the valueOf() function to extract the primitive value of the numObj object, which is the number 42.