자바스크립트 input 숫자만 입력 Javascript input only numbers

자바스크립트 input 숫자만 입력, Javascript input only numbers, 자바스크립트의 아스키코드표, Javascript ASCII Code, Event Key code, Mouse Click Key code

window.event.keyCode : 키가 눌렸을 때 키 코드를 얻음(getting Key Code of pressed key)

fromCharCode : 키 코드에 해당하는 아스키값을 얻음(getting Ascii Code of Key Code)

자바스크립트 input 숫자만 입력, Javascript input only numbers 

	
<input type="text" id="txt01" name="txt01" style="ime-mode:disabled;" maxlength="4" onkeydown="onlyNum();">  
	

자바스크립트의 아스키코드표 (Javascript ASCII Code, Event Key Code>

Key Code	기능키(Function key)	Key Code	기능키(Function key)	Key Code	기능키(Function key)
8	<backspace>	27	<Esc>	42	<Print Screen>
9	<Tab>	32	<Space bar>	43	<Execute>
12	<Clear>	33	<Page Up>	44	<Snapshot>
13	<Enter>	34	<Page Down>	45	<Ins>
16	<Shift>	35	<End>	46	<Del>
17	<Ctrl>	36	<Home>	47	<Help>
18	<Menu>	37	<Left arrow>	91	<Left window>
19	<Pause>	38	<Up arrow>	92	<Right window>
20	<Caps Lock>	39	<Right arrow>	144	<Number Lock>
21	<한/영>	40	<Down arrow>	145	<Scroll Lock>
25	<한자>	41	<Select>
Key Code	문자키(Character key)	Key Code	문자키(Character key)	Key Code	문자키(Character key)
65	<A>	74	<J>	83	<S>
66	<B>	75	<K>	84	<T>
67	<C>	76	<L>	85	<U>
68	<D>	77	<M>	86	<V>
69	<E>	78	<N>	87	<W>
70	<F>	79	<O>	88	<X>
71	<G>	80	<P>	89	<Y>
72	<H>	81	<Q>	90	<Z>
73	<I>	82	<R>
Key Code	숫자키(Number key)	Key Code	숫자키(Number Pad key)	Key Code	숫자키(Number Pad key)
48	<0>	96	<0>	106	곱하기 <*>
49	<1>	97	<1>	107	더하기 <+>
50	<2>	98	<2>	108	숫자키 모음
51	<3>	99	<3>	109	빼기 <->
52	<4>	100	<4>	110	소수점 <.>
53	<5>	101	<5>	111	나누기 </>
54	<6>	102	<6>
55	<7>	103	<7>
56	<8>	104	<8>
57	<9>	105	<9>
Key Code	기능키(Function key)	Key Code	특수문자(Special key)	Key Code	마우스 클릭(Mouse click)
112	<F1>	186	<;>		According to W3C its values
113	<F2>	187	<=>	0	Left button
114	<F3>	188	<,>	1	Middle button
115	<F4>	189	<->	2	Right button
116	<F5>	190	<.>
117	<F6>	191	</>
118	<F7>	192	<`>		According to MS its values
119	<F8>	219	<[>	1	Left button
120	<F9>	220	<\>	4	Middle button
121	<F10>	221	<]>	2	Right button
		222	<'>