小程序 绑定监听函数addEvent和通知函数callEvent

外部编写再调用

var eventList = {}

function addEvent(eventName, cb) {
  if (eventList[eventName] == undefined) {
    eventList[eventName] = []
  }
  eventList[eventName].push(cb)
}

function callEvent(eventName)
{
  if (eventList[eventName] == undefined) {
    return
  }

  var list = eventList[eventName]
  for(var i = 0; i < list.length; i++)
  {
    eventList[eventName][i]()
  }
}

module.exports = {
  addEvent: addEvent,
  callEvent: callEvent
}