commonJS — 自定义事件处理（for CustomEvent）

for CustomEvent

代码

/**
* Created by laixiangran on 2016/1/24
* homepage: http://www.cnblogs.com/laixiangran/ * for CustomEvent
*/

(function(undefined) {

var com = window.COM = window.COM || {};

com.$CE = (function() {
var guid = 1;
return {
addEvent: function(object, type, handler) {
if (!handler.$$$guid) handler.$$$guid = guid++;
if (!object.cusevents) object.cusevents = {};
if (!object.cusevents[type]) object.cusevents[type] = {};
object.cusevents[type][handler.$$$guid] = handler;
},
removeEvent: function(object, type, handler) {
if (object.cusevents && object.cusevents[type]) {
delete object.cusevents[type][handler.$$$guid];
}
},
fireEvent: function(object, type) {
if (!object.cusevents) return;
var args = Array.prototype.slice.call(arguments, 2),
handlers = object.cusevents[type];
for (var i in handlers) {
if (handlers.hasOwnProperty(i)) {
handlers[i].apply(object, args);
}
}
},
clearEvent: function(object) {
if (!object.cusevents) return;
for (var type in object.cusevents) {
if (object.cusevents.hasOwnProperty(type)) {
var handlers = object.cusevents[type];
for (var i in handlers) {
if (handlers.hasOwnProperty(i)) {
handlers[i] = null;
}
}
object.cusevents[type] = null;
}
}
object.cusevents = null;
}
};
}());
}());

参考