Determines whether an object has a property with the specified name.
A property name.
Determines whether an object has a property with the specified name.
A property name.
Determines whether an object exists in another object's prototype chain.
Another object whose prototype chain is to be checked.
Determines whether an object exists in another object's prototype chain.
Another object whose prototype chain is to be checked.
Determines whether a specified property is enumerable.
A property name.
Determines whether a specified property is enumerable.
A property name.
Returns a date converted to a string using the current locale.
Returns a date converted to a string using the current locale.
Returns a string representation of an object.
Returns a string representation of an object.
The initial value of Object.prototype.constructor is the standard built-in Object constructor.