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最近正在做的項目中,前台的javascirpt模組之間的互動比較多,就用到了設計模式中的觀察者模式。在學習和使用觀察者模式時,發現觀察者模式其實是事件驅動的原型。c#的事件驅動也算是觀察者模式的一種變種吧(不知理解是否正確,希望高手指點)。javascirpt的extjs架構的時間驅動的原型也是觀察者,因此,觀察者模式在模組間互動時可以隔離變化,實現高內聚,低耦合。下面是My Code<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0
一、什麼是匿名函數? 在Javascript定義一個函數一般有如下三種方式: 1. 函數關鍵字(function)語句: function fnMethodName(x){alert(x);} 2. 函數字面量(Function Literals): var fnMethodName = function(x){alert(x);} 3. Function()建構函式: var fnMethodName = new Function('x'
function ff() { var parNode = document.getElementById("table1"); //定位到table上 tbody = document.createElement("TBODY"); var tr= document.createElement("tr"); //建立一個tr類型的Element節點 var td = document.createElement("td"
track from:http://royal.pingdom.com/?p=305June 11, 2008Which Javascript frameworks are the most common?To answer that question, we here at Pingdom have examined a set of almost 200 popular websites to see if they use a Javascript framework, and in