有沒(méi)有相關(guān)的課程可以學(xué)習(xí)，經(jīng)?？碼pi文檔看的理解不對(duì)，尤其是那些缺少實(shí)例代碼的。例如下面這一段http://docs.meteor.com/api/pubsub.html#Meteor-subscribeMeteor.subscribe(name, [arg1, arg2...], [callbacks])import { Meteor } from 'meteor/meteor' (ddp-client/livedata_connection.js, line 521)Subscribe to a record set. Returns a handle that provides stop() and ready() methods.ARGUMENTSname StringName of the subscription. Matches the name of the server's publish() call.arg1, arg2... EJSON-able ObjectOptional arguments passed to publisher function on server.callbacks Function or ObjectOptional. May include onStop and onReady callbacks. If there is an error, it is passed as an argument to onStop. If a function is passed instead of an object, it is interpreted as an onReady callback.實(shí)際使用callbacks的寫(xiě)法應(yīng)該是Meteor.subscribe("name",{ onReady:function(){//代碼}}但是從文中的描述來(lái)看我根本想不到實(shí)際的寫(xiě)法應(yīng)該是這樣，不知道應(yīng)該怎么理解。有沒(méi)有系統(tǒng)的學(xué)習(xí)看api文檔的教程？求教！