constructor

Summary

Specifies the function that creates an object.

Syntax

object.constructor

Examples

The following example illustrates the use of the constructor property.

// A constructor function.
 function MyObj() {
     this.number = 1;
 }

 var x = new String("Hi");

 if (x.constructor == String)
     document.write("Object is a String.");
 document.write ("<br />");

 var y = new MyObj;
 if (y.constructor == MyObj)
     document.write("Object constructor is MyObj.");

 // Output:
 // Object is a String.
 // Object constructor is MyObj.

Remarks

The required object is the name of an object or function.

The constructor property is a member of the prototype of every object that has a prototype. This includes all intrinsic JavaScript objects except the Global and Math objects. The constructor property contains a reference to the function that constructs instances of that particular object.

Attributions

Microsoft Developer Network: Article