constructor Property (Error)

Specifies the function that creates an Error.




The required error is the name of an error 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 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.