The delete Operator
The delete operator deletes a property from an object.
It 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.
Example
const person = {
firstName:"John",
lastName:"Doe",
age:50,
eyeColor:"blue"
};
delete person.age;
Try it Yourself »
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 |
