Demonstrating the prototype property
Let's add a property to the object class called developed-By
Object.prototype.developedBy = "java2s.com"; // Now we create some objects of different types function myFunction() {} let myArray = new Array("apple", "tree", "horse"); let myBool = new Boolean("true"); // Now we test to see how the new property was applied to these descendent objects console.log(myFunction.developedBy); // w ww . j a v a 2s .c o m console.log(myArray.developedBy); console.log(myBool.developedBy);