How to make a method in JavaScript

"Learn how to create a method in JavaScript with an example. Understand how to define and call a method, and explore how to pass arguments."

Creating a Method in JavaScript

A method is a JavaScript function associated with an object. When a method is called, it is invoked with the object as its context, and can access the object's properties and methods. This tutorial will explain the steps for creating a method in JavaScript.

Declaring a Method

The first step to creating a method is to declare it in the object. To do this, you'll use the this keyword inside the object to indicate that the following code belongs to the object. Then, use the function keyword to declare the method. The following code shows an example of how to declare a method named myMethod in an object.

let myObject = {
  myMethod: function() {
    // method code goes here
  }
};

Adding Parameters

The next step is to add parameters to the method. This is done by adding the parameter names inside the parentheses after the method name. The following code shows an example of a method with two parameters named param1 and param2.

let myObject = {
  myMethod: function(param1, param2) {
    // method code goes here
  }
};

Writing the Method Code

Now that the method has been declared and its parameters have been added, it's time to write the code that will be executed when the method is called. This code will go inside the curly braces after the parameter list. The following code shows an example of a method that takes two parameters and adds them together.

let myObject = {
  myMethod: function(param1, param2) {
    return param1 + param2;
  }
};

Calling the Method

Now that the method has been declared and its code has been written, it can be called. To call a method, use the object name, followed by a period, followed by the method name, followed by parentheses. Any parameters that the method requires must be added inside the parentheses. The following code shows an example of calling the myMethod method with two parameters.

let result = myObject.myMethod(4, 6);
// result will be 10

That's all there is to creating a method in JavaScript. With this tutorial, you should now have the knowledge necessary to create your own methods.

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