[XML] XML 이란

아래 HTML을 XML요소로 구분해 본다면...

> < font size = '9' > test font

> font 는 요소 노드 (Element)
> size는 속성 노드(attribute)
> test font 는 값 노드(value)

[Python] String manipulation

1. length of string
>>> len(s)

2. Concatenate
>>> 'string1234' + 'string5678'

3. Casting to other type
>>> int("42")

4. Casting from other type to string
>>> x = 123
>>> str(x)

[Python] Control flow tool

1. if statement

if x<0:
     x = 0
elif x== 0:
     print 'zero'
elif x==1:
     print 'Single'
else:
     print 'More'


Don't forget indent!

[Java] 강제 익셉션 발생 - Exception

throw new Exception("User Define Exception > failed.");

[jQuery] Span object

1. html()
   It's same as xx.innerHTML();
   It can create object such as select box, check box
   >>$("#obj").html("bangkok");
2. text()
   It just replaces quote in span tag.
   It can't create object.
   >>$("#obj").text("bangkok");

[jQuery] Select box

1. visibility
   --show
   $("#obj_name").css("visibility","visible");
   --hide
   $("#obj_name").css("visibility","hidden");
   
2. event listener for change
   

   $("#select_lvl10").change(function(){
   

   -- blahblah

   });

[JAVA] Simple Date Format

SimpleDataFormat 예제 링크 자바 예제 링크