2010 年 7月随笔档案 - 白开水皮皮

UML：继承、实现、依赖、关联、聚合、组合

摘要：今天看到一篇好文，觉得还不错，褪去的记忆被唤醒：http://www.alisdn.com/wordpress/?p=1135继承指的是一个类（称为子类、子接口）继承另外的一个类（称为父类、父接口）的功能，并可以增加它自己的新功能的能力，继承是类与类或者接口与接口之间最常见的关系；在Java中此类关系通过关键字extends明确标识，在设计时一般没有争议性；实现指的是一个class类实现inte... 阅读全文

posted @ 2010-07-29 09:57 白开水皮皮阅读(285) 评论(0) 推荐(0)

java.text.MessageFormat

摘要：With MessageFormat, we can output String with parameters:MessageFormat:private static final String FAILURE = "#ERROR: FAILED TO LOCALIZE {0}";String value = MessageFormat.format(FAILURE, new Object[] ... 阅读全文

posted @ 2010-07-29 09:37 白开水皮皮阅读(201) 评论(0) 推荐(0)

javascript 语言精粹学习笔记

摘要：chapter 3: 对象null and undefinenull 是对象使用；undefined是属性使用var obj = {"first":"Kevin","last":"Ge"}判断是否是null　　　　 if(obj["middle"] == null)判断是否是undefine　　if(typeof obj["middle"] == "undefine")　　　　　　　　或　　 if... 阅读全文

posted @ 2010-07-19 10:37 白开水皮皮阅读(263) 评论(0) 推荐(0)

js parseURL

摘要：<script>function parseURL(url) { var a = document.createElement('a'); a.href = url; return { source: url, protocol: a.protocol.replace(':',''), host: a.hostname, port: a.port, query: a.search, p... 阅读全文

posted @ 2010-07-14 10:46 白开水皮皮阅读(1186) 评论(0) 推荐(0)

javascript 判断变量是否存在

摘要：Thetypeofoperator returns the following results for these variables: 阅读全文

posted @ 2010-07-08 15:28 白开水皮皮阅读(226) 评论(0) 推荐(0)

javascript with

摘要：这个是开域语句, 表示在with语句中的任何表达式的所属对象或者是类都由with后紧跟的变量所代表阅读全文

posted @ 2010-07-06 15:31 白开水皮皮阅读(165) 评论(0) 推荐(0)

javascript RegExp

摘要：var str="Is this all there is?";var patt1=/is/g;1. match　　str.match(patt1);2. test　　patt1.test(str);3. exec　　patt1.exec(str); 阅读全文

posted @ 2010-07-06 14:39 白开水皮皮阅读(125) 评论(0) 推荐(0)

javascript Array Object Methods

摘要：Array Object MethodsMethodDescriptionconcat()Joins two or more arrays, and returns a copy of the joined arraysjoin()Joins all elements of an array into a stringpop()Removes the last element of an arra... 阅读全文

posted @ 2010-07-06 14:21 白开水皮皮阅读(231) 评论(0) 推荐(0)

javascript break up a code line within a text string with a backslash.

摘要：document.write("Hello \World!");var a = "aasdf\ddd\ddd"; 阅读全文

posted @ 2010-07-06 14:00 白开水皮皮阅读(149) 评论(0) 推荐(0)

javascript try catch throw

摘要：<script type="text/javascript">var x=prompt("Enter a number between 0 and 10:","");try { if(x>10) { throw "Err1"; } else if(x<0) { throw "Err2"; } else if(isNaN(x)) { throw "Err3"; } }catc... 阅读全文

posted @ 2010-07-06 13:57 白开水皮皮阅读(586) 评论(0) 推荐(0)

javascript for...in statement

摘要：<html><body><script type="text/javascript">var x;var mycars = new Array();mycars[0] = "Saab";mycars[1] = "Volvo";mycars[2] = "BMW";for (x in mycars) { document.write(mycars[x] + "<... 阅读全文

posted @ 2010-07-06 13:36 白开水皮皮阅读(215) 评论(0) 推荐(0)

javascript box

摘要：1. alert("message")2. var r = confirm("are you sure to continue?");　　if(r == true)　　{...}3. var name = prompt("Please enter your name","Harry Potter");　　//prompt("sometext","defaultvalue");　 if(name !... 阅读全文

posted @ 2010-07-06 13:29 白开水皮皮阅读(161) 评论(0) 推荐(0)

javascript output str to browser

摘要：In my experience, there are two way to change the browser content.1. document.getElementById(ojbid).innerHTML = "" to change the object content2.document.write("<h1>" + name + "</h1>") to ... 阅读全文

posted @ 2010-07-06 11:44 白开水皮皮阅读(153) 评论(0) 推荐(0)

javascript prototype

摘要：In javascript, there is prototype for all function(Class). prototype could be a property or function. All the instance of the function(Class) inherit the property.There is one thing we need to pay att... 阅读全文

posted @ 2010-07-06 11:39 白开水皮皮阅读(208) 评论(0) 推荐(0)