In JavaScript, a prototype is an object that serves as a template or blueprint for other objects to inherit properties and methods from. Every object in JavaScript has a prototype, except for the root object, <code>Object.prototype</code>.
When an object is created in JavaScript, it is linked to its prototype through an internal property called <code>__proto__</code> (or <code>[[Prototype]]</code>). This linkage allows the object to access properties and methods defined in its prototype.
A prototype object can be created in JavaScript using either the object literal notation or the <code>Object.create()</code> method. For example:
<pre><code class="lang-javascript">// Object literal notation
const myPrototype = {
 method1() {
 console.log('Hello from method 1');
 },
 method2() {
 console.log('Hello from method 2');
 }
};

// Object created with the prototype
const myObject = Object.create(myPrototype);
</code></pre>
In the above example, <code>myObject</code> is created with <code>myPrototype</code> as its prototype. It can access <code>method1</code> and <code>method2</code> defined in the prototype through the <code>__proto__</code> property.
Prototypes are used extensively in JavaScript to implement inheritance, where objects can inherit properties and methods from their prototype, which in turn can inherit from their own prototype. This forms a prototype chain, which allows objects to share common functionality and reduces duplication of code.

In JavaScript, a prototype is an object that serves as a template or blueprint for other objects to inherit properties and methods from. Every object in JavaScript has a prototype, except for the root object, `Object.prototype`.

When an object is created in JavaScript, it is linked to its prototype through an internal property called `__proto__` (or `[[Prototype]]`). This linkage allows the object to access properties and methods defined in its prototype.

A prototype object can be created in JavaScript using either the object literal notation or the `Object.create()` method. For example:

```javascript
// Object literal notation
const myPrototype = {
  method1() {
    console.log('Hello from method 1');
  },
  method2() {
    console.log('Hello from method 2');
  }
};

// Object created with the prototype
const myObject = Object.create(myPrototype);
```

In the above example, `myObject` is created with `myPrototype` as its prototype. It can access `method1` and `method2` defined in the prototype through the `__proto__` property.

Prototypes are used extensively in JavaScript to implement inheritance, where objects can inherit properties and methods from their prototype, which in turn can inherit from their own prototype. This forms a prototype chain, which allows objects to share common functionality and reduces duplication of code.

Prototypes in JavaScript