随笔- 161
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07 2010 档案
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
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
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
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
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
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
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
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
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
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
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
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