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

The collect function in the Underscore library is also known as map. It applies a mapping function to each element of an array and returns a new array with the modified elements. Here's an example:

index.tsx
// Example array
var numbers = [1, 2, 3, 4, 5];

// Map each number to its square
var squares = _.map(numbers, function(num) {
  return num * num;
});

console.log(squares); // Output: [1, 4, 9, 16, 25]
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In this example, the _.map function takes two arguments: the array to be mapped (numbers) and a callback function that takes each element of the array (num) and returns the modified element (num * num). The resulting array is stored in the squares variable and displayed using console.log.

Note: The collect function is an alias for map in Underscore. They both work the same way.