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Showing content from https://webplatform.github.io/docs/javascript/Object/constructor below:

constructor · WebPlatform Docs

constructor Summary

Specifies the function that creates an object.

Syntax

object.constructor

Examples

The following example illustrates the use of the constructor property.


 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.");

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.