Spread Operator in Javascript Part 3 | Advanced Javascript Malayalam Tutorial

Описание: The spread operator in JavaScript, denoted by three dots (...), is a versatile tool for working with arrays and objects. It allows you to unpack the contents of an iterable (like an array) into individual elements or properties. Here's a breakdown of its common uses:

1. Copying and Combining Arrays:

Create a copy of an array without modifying the original:

2. Destructuring with Arrays:

Extract elements from an array into separate variables:

3. Spreading Arguments in Function Calls:

Pass the elements of an array as individual arguments to a function:

4. Working with Objects:

Create a shallow copy of an object:

Merge objects, giving priority to later properties:

Key Points:

The spread operator creates a copy by reference for objects, but a new array for arrays (shallow copy).
It's a concise way to manipulate and combine arrays and objects.
Remember, spread syntax is the opposite of the rest parameter which condenses elements into an array.


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