How do I go about writing the functions for the multiplication, division, addition, and subtraction?
Here is what I have so far:
<html>
<head>
<title></title>
<h1> Calculator</h1>
<script>
function getnumber(theValue)
{
var strInput = input.value;
strInput += theValue.toString();
input.value = strInput;
}
</script>
</head>
<body>
<INPUT TYPE="button" id="one" OnClick="getnumber(1)" value="1"/>
<INPUT TYPE="button" id="two" OnCLick="getnumber(2)" value="2"/>
<INPUT TYPE="button" id="three" OnClick="getnumber(3)" value="3"/>
<INPUT TYPE="button" id="plus" OnClick="getOp('+')" value="+"/>
<br>
<INPUT TYPE="button" id="four" onclick="getnumber(4)" value="4"/>
<INPUT TYPE="button" id="five" onclick="getnumber(5)" value="5"/>
<INPUT TYPE="button" id="six" onclick="getnumber(6)" value="6"/>
<INPUT TYPE="button" id="minus" OnClick="getOp('-')" value="-"/>
<br>
<INPUT TYPE="button" id="seven" OnClick="getnumber(7)" value="7"/>
<INPUT TYPE="button" id="eight" OnCLick="getnumber(8)" value="8"/>
<INPUT TYPE="button" id="nine" OnClick="getnumber(9)" value="9"/>
<INPUT TYPE="button" id="multiply" OnClick="getOp('*')" value="*"/>
<br>
<INPUT TYPE="button" id="clear" VALUE=" c " OnClick="Calc.Input.value = ''">
<INPUT TYPE="button" id="zero" VALUE=" 0 " OnClick="getnumber(0) += '0'">
<INPUT TYPE="button" id="letsgo" VALUE=" = " OnClick="Calc.Input.value = eval(Calc.Input.value)">
<INPUT TYPE="button" id="div" OnClick="getOp('/')" value="/">
<INPUT TYPE= "text" id= "input"/>
<br>
</body>
</html>