Creates an object that has the specified prototype or that has null prototype.
Object to use as a prototype. May be null.
Creates an object that has the specified prototype, and that optionally contains specified properties.
Object to use as a prototype. May be null
JavaScript object that contains one or more property descriptors.
Adds one or more properties to an object, and/or modifies attributes of existing properties.
Object on which to add or modify the properties. This can be a native JavaScript object or a DOM object.
JavaScript object that contains one or more descriptor objects. Each descriptor object describes a data property or an accessor property.
Adds a property to an object, or modifies attributes of an existing property.
Object on which to add or modify the property. This can be a native JavaScript object (that is, a user-defined object or a built in object) or a DOM object.
The property name.
Descriptor for the property. It can be for a data property or an accessor property.
Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
Object on which to lock the attributes.
Gets the own property descriptor of the specified object. An own property descriptor is one that is defined directly on the object and is not inherited from the object's prototype.
Object that contains the property.
Name of the property.
Returns the names of the own properties of an object. The own properties of an object are those that are defined directly on that object, and are not inherited from the object's prototype. The properties of an object include both fields (objects) and functions.
Object that contains the own properties.
Returns the prototype of an object.
The object that references the prototype.
Returns a value that indicates whether new properties can be added to an object.
Object to test.
Returns true if existing property attributes and values cannot be modified in an object, and new properties cannot be added to the object.
Object to test.
Returns true if existing property attributes cannot be modified in an object and new properties cannot be added to the object.
Object to test.
Returns the names of the enumerable string properties and methods of an object.
Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Prevents the addition of new properties to an object.
Object to make non-extensible.
Prevents the modification of attributes of existing properties, and prevents the addition of new properties.
Object on which to lock the attributes.
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A reference to the prototype for a class of objects.