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raggi/handler.js

Last active May 7, 2016 22:25
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Modern JS event handling mixin
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handler.js
const Handler = Base => class extends Base {
handleEvent (evt) {
return this[`on${evt.type.replace(/^./, c => c.toUpperCase())}`](evt)
}
}
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raggi commented May 7, 2016

Usage example:

class ExampleElement extends Handler(HTMLElement) {
  attachedCallback () {
    this.addEventListener('click', this)
  }
  detachedCallback () {
    this.removeEventListener('click', this)
  }
  onClick (evt) {
    console.log('clicked!')
  }
}

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