What is the use of the delete operator in JavaScript?

The delete operator in JavaScript is used to delete an object property or an element from an array.

The syntax of the delete operator is as follows:

delete object.property; // deletes a property from an object
delete object[index]; // deletes an element from an array

Here’s an example that shows how to use the delete operator to delete a property from an object:

const myObject = { a: 1, b: 2, c: 3 };
delete myObject.b; // deletes the 'b' property from myObject
console.log(myObject); // { a: 1, c: 3 }

In this example, we first create an object myObject with three properties: a, b, and c. We then use the delete operator to delete the b property from the object. Finally, we log the updated myObject to the console, which shows that the b property has been deleted.

Similarly, here’s an example that shows how to use the delete operator to delete an element from an array:

const myArray = [1, 2, 3];
delete myArray[1]; // deletes the element at index 1
console.log(myArray); // [1, undefined, 3]

In this example, we first create an array myArray with three elements: 1, 2, and 3. We then use the delete operator to delete the element at index 1. Finally, we log the updated myArray to the console, which shows that the element at index 1 has been deleted and replaced with undefined.

Thank you for reading, and let’s have conversation with each other

Thank you for reading my article. Let’s have conversation on Twitter and LinkedIn by connecting.