var forEachEls = require("../foreach-els")

module.exports = function(els, events, opts) {
  events = (typeof events === "string" ? events.split(" ") : events)

  events.forEach(function(e) {
    var event
    event = document.createEvent("HTMLEvents")
    event.initEvent(e, true, true)
    event.eventName = e
    if (opts) {
      Object.keys(opts).forEach(function(key) {
        event[key] = opts[key]
      })
    }

    forEachEls(els, function(el) {
      var domFix = false
      if (!el.parentNode && el !== document && el !== window) {
        // THANK YOU IE (9/10/11)
        // dispatchEvent doesn't work if the element is not in the DOM
        domFix = true
        document.body.appendChild(el)
      }
      el.dispatchEvent(event)
      if (domFix) {
        el.parentNode.removeChild(el)
      }
    })
  })
}