Prototype-based programming

Prototype-based programming is a style of object-oriented programming in which behavior reuse (known as inheritance) is performed via a process of reusing existing objects that serve as prototypes.// Example of true prototypal inheritance style in JavaScript. // Object creation using the literal object notation {}. constfoo={name:"foo",one:1,two:2}; // Another object. constbar={two:"two",three:3}; // Object.setPrototypeOf() is a method introduced in ECMAScript 2015. // For the sake of simplicity, let us pretend that the following // line works regardless of the engine used: Object.setPrototypeOf(bar,foo);// foo is now the prototype of bar. // If we try to access foo's properties from bar from now on, // we'll succeed. bar.one;// Resolves to 1. // The child object's properties are also accessible. bar.three;// Resolves to 3. // Own properties shadow prototype properties. bar.two;// Resolves to "two". bar.name;// Unaffected, resolves to "foo". foo.name;// Resolves to "foo".