Spread Operator in JavaScript

You can use the … spread operator to pass the elements of an array or other iterable object as arguments in a function invocation. The ... spread operator can be used to spread out the elements of an iterable, like an array, as arguments in a function call. Here is an example of how you can use it:

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function sum(a, b, c) {
    return a + b + c;
}

let numbers = [1, 2, 3];

// Use the spread operator to pass elements of array as arguments
console.log(sum(...numbers)); // Outputs: 6

In this example, the array numbers is spread out into its individual elements (1, 2, 3) by the ... operator, and these are then passed as arguments to the sum function. This is equivalent to calling sum(1, 2, 3).

The spread operator can be particularly useful when you have an array of values that you want to pass to a function that expects separate arguments, or when you’re working with a function that can take any number of arguments. It essentially allows you to treat an array as a list of function arguments, which can be very convenient.