关于基于underscore库写的一个基类问题
0
悬赏园豆：10
[待解决问题]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>scp.core测试</title> <script src="underscore.js"></script> </head> <body> <script type="text/javascript"> //------------------------------------------------------------ (function(){ var global = this,Scp={},Base; global.Scp=Scp; Base = Scp.Base = function(){ } //构造函数 makeCtor = function(){ function constructor () { return this.constructor.apply(this, arguments) || null; } return constructor; } _.extend(Scp.Base,{ extend:function(parent){ var parentPrototype = parent.prototype; this.prototype = parentPrototype; this.superclass = this.prototype.superclass = parent; this.self = this.prototype; }, addMembers:function(members){ var prototype = this.prototype, names = [], i, ln, name, member,clsName = prototype.$classname; for (name in members) { names.push(name); } for (i = 0,ln = names.length; i < ln; i++) { name = names[i]; if (members.hasOwnProperty(name)) { member = members[name]; if (typeof member == 'function' ) { member.$ownerClsName = clsName; member.$owner = this; member.$name = name; } prototype[name] = member; } } return this; }, callParent:function(args){ var method;//????this.callParent.caller?这个域变成了 Scp.define.constructor method = this.callParent.caller; method = method.$owner.superclass[method.$name]; return method&&(method).apply(this, args || null); } }); Base.addMembers.call(Base,Base);// _.extend(Scp,{ ns : function (name) { var names = name.split('.'); var parent = window; for (var i = 0; i < names.length; i++) { var n = names[i]; var p = parent[n]; if (p === undefined) { parent[n] = p = {}; } parent = p; } return parent; }, define:function(ns,data){ var cls = makeCtor(),parent; cls = Scp.setNs(ns,cls);//制造构造函数 _.extend(cls,Base); if(data.extend){ parent = Scp.ns(data.extend); delete data.extend; Base.extend.call(cls,parent); //cls.extend(parent); }else{ //cls.extend(Base); Base.extend.call(cls,Base); } data.$classname = ns; _.extend(cls.prototype,data);//继承 Base.addMembers.call(cls,cls.prototype);//修辞一下方法 return cls; }, create:function(ns,data){ var cls = Scp.ns(ns); return new cls(data); }, setNs: function(name, value) { var root = global, parts = name.split('.'), ln = parts.length - 1, leaf = parts[ln], i, part; for (i = 0; i < ln; i++) { part = parts[i]; if (typeof part != 'string') { root = part; } else { if (!root[part]) { root[part] = {}; } root = root[part]; } } root[leaf] = value; return root[leaf]; } } ); }).call(this); window.onload = function(){ debugger; Scp.define('Scp.Component',{ renderTpl:'', constructor:function(){ this.initComponent(); }, initComponent:function(){ alert(1); } }); Scp.define('Scp.Menu',{ extend:'Scp.Component', renderTpl:'asdfasdf', constructor:function(config){ this.callParent(arguments); }, initComponent:function(){ } }); window.menu = new Scp.Menu({a:1}); } </script> </body> </html>
当调用 callParent一直报错。大侠急救我一下。。。在线等待。。。
