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Welcome !
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This blog has been designed precisely for the students in the field of Computer Science.
Cross Browser Support
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of viewers are also published here.
Showing posts with label HTML codes. Show all posts
Showing posts with label HTML codes. Show all posts
Program Garden...
Calculator implementation in HTML using Javascript
Source code
<html>
<head>
<script language="javascript">
var flag=0,a,b,c;
function perform(value)
{
if(flag==0)
{
b=parseInt(value);
a=f1.t1.value;
document.f1.t1.value='';
flag=1;
}
else
{
c=f1.t1.value;
document.f1.t1.value='';
if(b==1)
{
var d=parseFloat(a)+parseFloat(c);
document.f1.t1.value=d;
}
else if(b==2)
{
var d=parseFloat(a)-parseFloat(c);
document.f1.t1.value=d;
}
else if(b==3)
{
var d=parseFloat(a)*parseFloat(c);
document.f1.t1.value=d;
}
else
{
var d=parseFloat(a)/parseFloat(c);
document.f1.t1.value=d;
}
flag=0;
}
}
</script>
</head>
<body><center>
<font color="green" size="6" face="elephant"><b><u>CALCULATOR</u></b></font>
</br></br></br>
<table border="2" bordercolor="green" cellpadding="2" >
<tr>
<td><form name="f1">
<input type="text" name="t1" id="txt1">
</form></td></tr>
<tr>
<td><form name="f2">
<input type="button" value=" 1 " onclick="document.f1.t1.value+='1'" >
<input type="button" value=" 2 " onclick="document.f1.t1.value+='2'">
<input type="button" value=" 3 " onclick="document.f1.t1.value+='3'">
<input type="button" value=" + " onclick="perform(1)"></br>
<input type="button" value=" 4 " onclick="document.f1.t1.value+='4'">
<input type="button" value=" 5 " onclick="document.f1.t1.value+='5'">
<input type="button" value=" 6 " onclick="document.f1.t1.value+='6'">
<input type="button" value=" - " onclick="perform(2)"></br>
<input type="button" value=" 7 " onclick="document.f1.t1.value+='7'">
<input type="button" value=" 8 " onclick="document.f1.t1.value+='8'">
<input type="button" value=" 9 " onclick="document.f1.t1.value+='9'">
<input type="button" value=" * " onclick="perform(3)"></br>
<input type="button" value=" 0 " onclick="document.f1.t1.value+='0'">
<input type="button" value=" / " onclick="perform(4)">
<input type="button" value=" = " onclick="perform(value)">
<input type="reset" value= " clr " onclick="document.f1.t1.value='' ">
</form></td>
</tr>
</table>
</center>
</body>
</html>
Output
1.Copy and paste the above source code
in notepad.
2.Save the file with .html extension.
3.Open the file using any of the web
browsers.
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