constructor Property (Error)
Specifies the function that creates an Error.
error is the name of an error object.
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 Error("This is an error"); if (x.constructor == Error) document.write("Object is an error."); // Output: // Object is an error.
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.