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/**
* --------------------------------------------------------------------------
* Bootstrap (v4.0.0-beta): dom/eventHandler.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
const EventHandler = {
on(element, event, handler) {
if (typeof event !== 'string' || typeof element === 'undefined') {
return
}
element.addEventListener(event, handler, false)
},
one(element, event, handler) {
const complete = () => {
/* eslint func-style: off */
handler()
element.removeEventListener(event, complete, false)
}
EventHandler.on(element, event, complete)
},
trigger(element, event) {
if (typeof event !== 'string' || typeof element === 'undefined') {
return null
}
const eventToDispatch = new CustomEvent(event, {
bubbles: true,
cancelable: true
})
element.dispatchEvent(eventToDispatch)
return eventToDispatch
}
}
export default EventHandler
|
