constructor Property (Date)

constructor Property (Date)


Specifies the function that creates a date.


The required date is the name of a date object.

The constructor property is a member of the prototype of every object that has a prototype. The constructor property contains a reference to the function that constructs instances of that particular object.


The following example illustrates the use of the constructor property.

var x = new Date("Hi");

if (x.constructor == Date)
    document.write("Object is a date.");

// Output:
// Object is a date.


Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported Store apps (Windows 8 and Windows Phone 8.1). See Version Information.

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