custom event emitter 使发出CustomEvent对象变得非常简单的浏览器混合

自定义事件发射器custom-event-emitter是一个浏览器mixin，它使得发出对象变得非常简单。安装$ npm install custom-event-emitter用法var emitter = require ( 'custom-event-emitter' ) var element = document . createElement ( 'p' ) // Adds an emit function to the element. // (the second argument is optional) emitter . call ( element , { bubbles : true , cancelable : true } ) element . addEventListener ( 'hi' , function ( e ) {