What is Bind method in JavaScript

In this post we will take a look on Bind function in JavaScript. This method Bind a function to an Object.

For example if you have a function as following,

function FindSquare(number) {

return number * number;

And you have created an object as below,

var Calculator = {};

As you see that calculator object does not contain any properties or method. Now let us say you want to bind function FindSqaure to object Calculator then you can do that using Bind method in JavaScript.

  1. Bind method binds a function to object
  2. It returns a function after binding

So you can bind FindSquare function to Calculator object as below,

var CFindSquare = FindSquare.bind(Calculator);

Now when you call CFindSquare function and pass parameter, it will actually get passed to original function FindSquare.

You can invoke FindSquare method on object Calculator as follows,

var result = CFindSquare(8);

In this way you can work with bind() method in JavaScript. I hope you find this post useful. Thanks for reading.

7 thoughts on “What is Bind method in JavaScript

  1. Thanks for the post.
    It will be great if you explain the scenarios where it will be useful and advantage of it?

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s