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Setting & Deleting Properties

Setting & Deleting Properties

This lesson teaches how to set properties using dot operator or square brackets and how to delete properties.

Setting Values Using Dot Notation

A property being accessed by the dot operator can be set/updated using the assignment operator (=).

Example

Let’s take a look at an example to see the implementation.

Javascript (babel-node)
//creating an object named employee
var employee = {
  //defining properties of the object
  //setting data values
  name : 'Joe',
  age : 20
}
console.log("Originally age was:",employee.age)
//updating the value of "age"
employee.age = 24
console.log("New age is:",employee.age)

Adding Properties

What if the property doesn’t exist? ...

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