react-auto-bind 

> Automatically bind methods to their class instance. This is optimized for react. It doesn't bind render and other lifecycle methods.

Install

``
$ npm install --save react-auto-bind
`

Usage

`js
const autoBind = require('react-auto-bind');

class Unicorn {
constructor(name) {
this.name = name;
autoBind(this);
}
message() {
return ${this.name} is awesome!;
}
}

const unicorn = new Unicorn('Rainbow');

// Grab the method off the class instance
const message = unicorn.message;

// Still bound to the class instance
message();
//=> 'Rainbow is awesome!'

// While message() would not be bound & would have resulted in
message();
//=> Error: Cannot read property 'name' of undefined
`

$3

`js
const autoBind = require('react-auto-bind');

class Griffin {
constructor(name) {
this.name = name;
autoBind(this, 'amaze');
}
amaze() {
return ${this.name} is amazing!;
}
message() {
return ${this.name} is undefined!;
}
}

const buckbeak = new Griffin('Buckbeak');

// Grab the method off the class instance
const message = buckbeak.message;
const amaze = buckbeak.amaze;

// Still bound to the class instance
amaze();
//=> 'Buckbeak is amazing!'

// Without autoBind(this), the above would have resulted in
message();
//=> Error: Cannot read property 'name' of undefined
`

API

$3

Bind methods in self to their class instance. Returns the self object.

#### self

Type: Object

Object with methods to bind.

#### bindOnly

Type: Strings`

If more than one parameters are passed then only those methods are bound.

Related

- bind-methods - Bind all methods in an object to itself or a specified context
- auto-bind - Automatically bind all methods to their class instance.