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Make your JavaScript code cleaner and less complex with spread & rest operators.

Unlock the power of spread and rest operators in JavaScript:
Spread and Rest operators are two important features in JavaScript introduced in ECMAScript 6 (ES6) that provide a concise and powerful way to work with arrays and objects.
1. Spread Operator

The spread operator (โ€ฆ) is used to spread the contents of an array or object into individual elements. This is useful when you want to combine multiple arrays or objects into a single array or object, Or when passing arrays or objects as arguments.
In this example, we use the spread operator to combine `arr1` and `arr2` into a new array called `combinedArr`.
We can also use the spread operator to add new elements to an array:
In the example above, we use the spread operator to add the element `0` to the beginning of the `arr` array.
The spread operator can also be used with objects:
In the example above, we use the spread operator to combine `obj1` and `obj2` into a new object called `combinedObj`.
2. Rest Operator

The rest operator (โ€ฆ) is used to represent an indefinite number of arguments as an array. This is useful when you want to pass a variable number of arguments to a function, or when you want to group a set of arguments into an array.
In this example, we define a function called `sum` that uses the rest operator to collect any number of arguments into an array called `numbers`. We then use the `reduce` method to sum up the numbers in the array and return the result.
We can also use the rest operator to group a set of arguments into an array:
In this example, we use array destructuring with the rest operator to assign the first two elements of the array to variables called `first` and `second`, and the remaining elements to an array called `rest`.
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