Method auto-bind for ES6 (ES2015) classes

This package provides a single function, autobind, for use within a constructor to bind all methods to the instance itself.

For example, this allows us to pass a method to an event handler element.addEventListener('click', this.onClick) and be sure the onClick method will always be called with the right context.

Note: This has some specific logic for React, but could be used in any project.

Usage:

1import autobind from 'class-autobind';
2
3class MyComponent extends React.Component {
4  constructor() {
5    super(...arguments);
6    autobind(this);
7  }
8  render() {
9    return <button onClick={this.onClick}>Click Me</button>;
10  }
11  onClick() {
12    console.log('Button Clicked');
13  }
14}

Advanced Usage:

If your component will possibly be subclassed (you really should not do this, but some third-party libraries like react-css-modules do so) then you will need to specify which prototype will be the source of methods that are to be automatically bound.

1import autobind from 'class-autobind';
2
3class MyComponent extends React.Component {
4  constructor() {
5    super(...arguments);
6    autobind(this, MyComponent.prototype); // Note the second parameter.
7  }
8  render() {
9    /* ... */
10  }
11}
12
13class MySubClassedComponent extends MyComponent {
14  /* This is probably a very bad idea. */
15}

License

This software is BSD Licensed.