My Operachuokw
Wednesday, May 19, 2010 9:10:55 AM
//<html>
<head>
may tinh co ban
<STYLE TYPE="text/css">
.N
{
width:40;
height:40;
color:black;
font-weight:bold;
font-size:12;
}
</STYLE>
<script language=javascript>
function c(){
a=f.nhap.value;
f.nhap.value=a.substring(0,a.length-1)
}
function can()
{
if(f.nhap.value==' ')
alert('Nhap so')
else
b=parseInt(f.nhap.value)
f.nhap.value=Math.sqrt(b)
}
function dd()
{
tam=f.nhap.value
if(tam==' ')
f.nhap.value='-'
else if (parseInt(f.nhap.value)<0)
f.nhap.value=tam*-1
else
f.nhap.value=tam*-1
}
</script>
<body>
| Máy Tính Đơn Giản |
|---|
|
<form name="f">
<input type="text" name="nhap" size=32> <input type="button" name="1" value="1" onclick="f.nhap.value+=1" class="N"> <input type="button" name="2" value="2" onclick="f.nhap.value+=2" class="N"> <input type="button" name="3" value="3" onclick="f.nhap.value+=3" class="N"> <input type="button" name="+" value="+" onclick="f.nhap.value+='+'" class="N"> <input type="button" name="C" value="C" onclick="c()" class="N"> <input type="button" name="4" value="4" onclick="f.nhap.value+=4" class="N"> <input type="button" name="5" value="5" onclick="f.nhap.value+=5" class="N"> <input type="button" name="6" value="6" onclick="f.nhap.value+=6" class="N"> <input type="button" name="-" value="-" onclick="f.nhap.value+='-'" class="N"> <input type="button" name="CE" value="CE" onclick="f.nhap.value=' '" class="N" > <input type="button" name="7" value="7" onclick="f.nhap.value+=7" class="N"> <input type="button" name="8" value="8" onclick="f.nhap.value+=8" class="N"> <input type="button" name="9" value="9" onclick="f.nhap.value+=9" class="N"> <input type="button" name="*" value="*" onclick="f.nhap.value+='*'" class="N"> <input type="button" name="Sqrt" value="sqrt" onclick="can()" class="N" > <input type="button" name="0" value="0" onclick="f.nhap.value+=0" class="N"> <input type="button" name="+/-" value="+/-" class="N" onclick="dd()"> <input type="button" name="." value="." class="N" onclick="f.nhap.value+='.'"> <input type="button" name="/" value="/" onclick="f.nhap.value+='/'" class="N"> <input type="button" name="=" value="=" onclick="f.nhap.value=eval(f.nhap.value)" class="N"> |
