예제_계산기
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> 계산기 </TITLE>
<style>
caption {font-size:60px; margin-bottom:20px;}
table td input {font-size:20px; background:white; width:100%;height:50px;}
table td {width:100px;}
.numcolor {background-color:#8CC2FA; color:white;}
.calcolor {background-color:#1278B3; color:white;}
#num {text-align:right;}
</style>
<script language="javascript">
var num1=0;
var num2=0;
var state;
var result;
function inputNum(a){
document.getElementById("num").value +=a;
}
function change(){
var pm = document.getElementById("num").value;
if(pm > 0) document.getElementById("num").value = -pm;
}
function calcul(a){
num1 = document.getElementById("num").value;
if(a == "pow") {
state = "pow";
document.getElementById("num").value=null;
}
if(a == "sin") {
state = "sin";
result = Math.sin(num1);
document.getElementById("num").value = result;}
if(a == "cos") {
state = "cos";
result = Math.cos(num1);
document.getElementById("num").value = result;}
if(a == "tan") {
state = "tan";
result = Math.tan(num1);
document.getElementById("num").value = result;}
if(a=="sum"){
state = "sum";
document.getElementById("num").value=null;
}
if(a=="minus"){
state = "minus";
document.getElementById("num").value=null;
}
if(a=="mul"){
state = "mul";
document.getElementById("num").value=null;
}
if(a=="div"){
state = "div";
document.getElementById("num").value=null;
}
}
function end(){
num2 = document.getElementById("num").value;
if(state == "pow") result = Math.pow(num1,num2);
if(state == "sum") result = Number(num1)+Number(num2);
if(state == "minus") result = num1 - num2;
if(state == "mul") result = num1 * num2;
if(state == "div") result = num1 / num2;
document.getElementById("num").value = result;
}
</script>
</HEAD>
<BODY>
<form>
<center>
<table border="1px solid">
<caption>계산기</caption>
<tr>
<td colspan="5"><input type="text" id = "num" size="100%"></td>
</tr>
<tr>
<td colspan="3"><input type="reset" value="Clear" width="100%"></td>
<td colspan="2"><input type="button" value="=" onClick="end()"></td>
</tr>
<tr>
<td><input type="button" class="numcolor" onClick="inputNum(1)" value="1"></td>
<td><input type="button" class="numcolor" onClick="inputNum(2)" value="2"></td>
<td><input type="button" class="numcolor" onClick="inputNum(3)" value="3"></td>
<td><input type="button" value="+" class="calcolor" onClick="calcul('sum')"></td>
<td><input type="button" value="x^y" class="calcolor" onClick="calcul('pow')"></td>
</tr>
<tr>
<td><input type="button" class="numcolor" onClick="inputNum(4)" value="4"></td>
<td><input type="button" class="numcolor" onClick="inputNum(5)" value="5"></td>
<td><input type="button" class="numcolor" onClick="inputNum(6)" value="6"></td>
<td><input type="button" value="-" class="calcolor" onClick="calcul('minus')"></td>
<td><input type="button" value="sin" class="calcolor" onClick="calcul('sin')"></td>
</tr>
<tr>
<td><input type="button" class="numcolor" onClick="inputNum(7)" value="7"></td>
<td><input type="button" class="numcolor" onClick="inputNum(8)" value="8"></td>
<td><input type="button" class="numcolor" onClick="inputNum(9)" value="9"></td>
<td><input type="button" value="*" class="calcolor" onClick="calcul('mul')"></td>
<td><input type="button" value="cos" class="calcolor" onClick="calcul('cos')"></td>
</tr>
<tr>
<td><input type="button" class="numcolor" onClick="inputNum(0)" value="0"></td>
<td><input type="button" value="+/-" class="numcolor" onClick="change()"></td>
<td><input type="button" value="." class="numcolor" onClick="inputNum('.')"></td>
<td><input type="button" value="/" class="calcolor" onClick="calcul('div')"></td>
<td><input type="button" value="tan" class="calcolor" onClick="calcul('tan')"></td>
</tr>
</table>
</center>
</form>
</BODY>
</HTML>
http://colorscripter.com/info#e" target="_blank" style="color:#4f4f4f; text-decoration:none">Colored by Color Scripter
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