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I’ve been at this for three days. I need to create a simple calculator and i’m having trouble. This HTML contains three textboxes, two for operands and
one for a result. four buttons one for each (+,-,*,/) using onclick to solve. ?
This what I have and it’s not working
[CODE]<html>
<form>
<table>
<tr><td>Operand 1</td><td><input type=”text” name=”op1″/></td></tr>
<tr><td>Operand 2</td><td><input type=”text” name=”op2″/></td></tr>
<tr><td>Result</td><td><input type=”text” name=”r”/></td></tr>
</table>
<input type=”button” value=”+” onClick=”do_addition()”/>
<input type=”button” value=”-” onClick=”do_subtraction()”/>
<input type=”button” value=”*” onClick=”do_multiplication()”/>
<input type=”button” value=”/” onClick=”do_division()”/>
</form>
<head>
<title>Homework 2</title>
<meta name=”author” content=”CV”/>
<script type=”text/javascript”>
function do_addition() {
op1=parsefloat(op1.value);
op2=parsefloat(op2.value);
rval=op1+op2;
r.value=rval;
}
function do_subtraction() {
op1=parsefloat(op1.value);
op2=parsefloat(op2.value);
rval=op1-op2;
r.value=rval;
}
function do_multiplication() {
op1=parsefloat(op1.value);
op2=parsefloat(op2.value);
rval=op1*op2;
r.value=rval;
}
function do_division() {
op1=parsefloat(op1.value);
op2=parsefloat(op2.value);
rval=op1/op2;
r.value=rval;
}
</script>
</head>
<body>
</body>
</html>