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The observer pattern is also called the Publish-subscribe pattern, which defines a one-to-many dependency between objects, and all objects that depend on it will be notified when the state of an object changes. In JavaScript, the event model is generally used instead of the traditional observer pattern.The following is an example of the sales Office (publisher) and the individual viewing (subscribers):var event = {Clientlist:[],//Cache listListen:func

function will be executed two times Event.trigger (' evt1 ',;*/ //2). Post-Release subscription /*Event.trigger (' evt1 ', 11, 22); So it executes two times E2 function Event.trigger (' evt1 ', 33, 44); Event.one (' EVT1 ', E1); This will be used because Offlinestack is set to null event.one (' EVT1 ', E2); This does not execute, need to wait until the next trigger will be triggered, because E1 deleted from the cache, added E2, if there is another one method, and so o

1. Publish-Subscribe mode is also called the Observer pattern, which defines a one-to-many dependency between objects.2. How to implement the Publish-subscribe mode2-1. First specify a good publisher2-2, add a buffer list to the publisher, the user holds the callback function to inform the Subscriber2-3. When the last message is published, the Publisher will traverse the cache list and trigger the subscriber callback functionExample:var salesOffice = {};Salesoffice.clientlist = [];Salesoffice.li

Http://guacamole.sourceforge.net/ What is Guacamole? Guacamole 0.1.5, served by an Amazon EC2 instance. Guacamole is an HTML5 + JavaScript (Ajax) viewer for VNC, which makes use of a server-side VNC-to-XML proxy written in Java. the current version is almost as responsive as native VNC and shoshould work in any browser supporting the HTML5 canvas tag. Guacamole provides access to your VNC serv

[namespace] = ret): ret; };Return {create: _create, one:function(Key,fn,last) {var event =This.create (); Event.one (Key,fn,last); }, remove:function(KEY,FN) {var event =This.create (); Event.remove (KEY,FN); }, listen:function(Key,fn,last) {var event =This.create (); Event.listen (Key,fn,last); }, Trigger:function(){var event =This.create (); Event.trigger.apply (Thisarguments); } }; }();return Event;}) ();/********* first post-subscription *********/event.trigger (' Click ',1); Event.listen ('

); P2.on ( ' mm2 ', fn2); P2.emit ( ' mm2 ', ' ha 2 ha 2 ha 2 ha 2 '); console.log ( '-------------');p 2.off ( ' mm2 ', FN); P2.emit ( ' mm2 ', ' ha 2 ha 2 ha 2 ha 2 '); console.log ( '-------------');p 2.off ( mm2 '); P2.emit ( ' mm2 ', ' ha 2 ha 2 ha 2 ha 2 '); console.log ( '-------------'); For JavaScript Technical Essentials article please see Shanghai Shang School: "JavaScript Document Obje

1. DefinitionEvents = function() {var listen, log, obj, one, remove, trigger, __this;obj = {};__this = this;listen = function( key, eventfn ) { //把简历扔盒子, key就是联系方式.var stack, _ref; //stack是盒子stack = ( _ref = obj[key] ) != null ? _ref : obj[ key ] = [];return stack.push( eventfn );};one = function( key, eventfn ) {remove( key );return listen( key, eventfn );};remove = function( key ) {var _ref;return ( _ref = obj[key] ) != null ? _ref.length = 0 : void 0;};trigger = function() { //面试官打电话通知面试者var