)
Basit bir sistem ile karşınızdayım.
Kod:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Hesap Makinesi</title>
<script language="javascript">
var rakamekle = false
var oncekisonuc = 0
var islem = "="
function temizle()
{
document.hesapmakinesi.sonuc.value = 0
oncekisonuc = 0
rakamekle = false
islem = "="
}
function hesapla(yeniislem)
{
var yenisayi = eval(document.hesapmakinesi.sonuc.value)
if (islem == "+") {
oncekisonuc = oncekisonuc + yenisayi
}
else if (islem == "-") {
oncekisonuc = oncekisonuc - yenisayi
}
else if (islem == "/") {
oncekisonuc = oncekisonuc / yenisayi
}
else if (islem == "*") {
oncekisonuc = oncekisonuc * yenisayi
}
else if (islem == "=") {
oncekisonuc = yenisayi
}//www.bilisimkonulari.com
else {
oncekisonuc = yenisayi
}
document.hesapmakinesi.sonuc.value = oncekisonuc
rakamekle = false
islem = yeniislem
}
function sayiyaz(rakam)
{
if (rakamekle) {
document.hesapmakinesi.sonuc.value += rakam
}//www.bilisimkonulari.com
else {
document.hesapmakinesi.sonuc.value = rakam
rakamekle = true
}
}
-->
</script>
</head>
<body>
<form name="hesapmakinesi">
<input type="field" name="sonuc" value="0" width=20 align="right">
<br>
<input type="button" name="7" value="7" onClick="sayiyaz(7)">
<input type="button" name="8" value="8" onClick="sayiyaz(8)">
<input type="button" name="9" value="9" onClick="sayiyaz(9)">
<br>
<input type="button" name="4" value="4" onClick="sayiyaz(4)">
<input type="button" name="5" value="5" onClick="sayiyaz(5)">
<input type="button" name="6" value="6" onClick="sayiyaz(6)">
<br>
<input type="button" name="1" value="1" onClick="sayiyaz(1)">
<input type="button" name="2" value="2" onClick="sayiyaz(2)">
<input type="button" name="3" value="3" onClick="sayiyaz(3)">
<br>
<input type="button" name="0" value="0" onClick="sayiyaz(0)">
<input type="button" name="C" value="C" onClick="temizle()">
<input type="button" name="=" value="=" onClick="hesapla('=')">
<br>
<input type="button" name="+" value="+" onClick="hesapla('+')">
<input type="button" name="-" value="-" onClick="hesapla('-')">
<input type="button" name="*" value="*" onClick="hesapla('*')">
<input type="button" name="/" value="/" onClick="hesapla('/')">
</form>
</body>
</html>
