freeCodeCamp/guide/english/javascript/tutorials/delete-properties-from-a-javascript-object/index.md

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Delete Properties from a JavaScript Object

We can also delete properties from objects like this:

delete ourDog.bark;

The delete operator removes a property from an object.

Syntax

delete expression where expression should evaluate to a property reference, e.g.:

delete object.property
delete object['property']

Parameters

object
The name of an object, or an expression evaluating to an object.

property
The property to delete.

Example

var person = {name:'Jay', age:'52'};
delete person['age'];

console.log(person); //{name:'Jay'}

Return value

Throws in strict mode if the property is an own non-configurable property (returns false in non-strict). Returns true in all other cases.

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