ES 6: Different between REST and SPREAD Operators

Java-Script Rest and Spread Operators:

In JavaScript, we are using three dots ( ... ) for both REST and SPREAD Operators. But these two operators are not the same they both have a different purpose.

REST Operator

- Purpose of this operator is to collect all remaining elements into the array.

- For Example:

- let take one array in below example

- O/P :

Necklace

[ 'Earring', 'Payal', 'Brooch', 'Bangles']

- In the Above example three-dot contain the rest of the product time in the restProdcut variable that calls Destructuring that breaks our code into small pieces.

- so in the above example, mainProduct variable contains my Main product and restProduct varibale contains my rest products.

- The rest operator always gives rest data into array format only.

- while creating function we can also use rest operator like below

SPREAD Operator:

- It's work opposite to rest operators, like in rest operator we are collecting item into an array but in spread operator we are unpack the collected items into a single elements.

- For Examples

- O/P : [ 'Necklace', 'Earring', 'Payal', 'Brooch', 'Bangles'];

- We can say SPREAD operator is used for copy one array into another array or concatenates.

I hope you guys enjoyed this tutorial 😼

Comments

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