autobind decorator
A class or method decorator which binds methods to the instance so this
is always correct, even when the method is detached.
This is particularly useful for situations like React components, where you often pass methods as event handlers and would otherwise need to .bind(this)
.
<button onClick={ this.handleClick.bind(this) }></button>
<button onClick={ this.handleClick }></button>
As decorators are a part of future ECMAScript standard they can only be used with transpilers such as Babel.
Note Babel 6 users:
The implementation of the decorator transform is currently on hold as the syntax is not final. If you would like to use this project with Babel 6.0, you may use babel-plugin-transform-decorators-legacy which implement Babel 5 decorator transform for Babel 6.
Installation:
npm install autobind-decorator
Examples:
import autobind from 'autobind-decorator'
class Component {
constructor(value) {
this.value = value
}
@autobind
method() {
return this.value
}
}
let component = new Component(42)
let method = component.method
method()
@autobind
class Component { }
Alternative
You might want to look at Class instance properties.