The delete Operator
Example
const person = {
firstName:"John",
lastName:"Doe",
age:50,
eyeColor:"blue"
};
delete person.age;
Try it Yourself »
JavaScript delete
The delete operator deletes a property from an object:
The delete operator deletes both the value of the property and the property itself.
After deletion, the property cannot be used before it is added back again.
The delete operator is designed to be used on object properties. It has no effect on variables or functions.
Note
The delete operator should not be used on the properties of any predefined JavaScript objects (Array, Boolean, Date, Function, Math, Number, RegExp, and String).
This can crash your application.
Browser Support
delete is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |
