Javascript: Switch Case
<html>
<head>
<title>Switch case</title>
<script language="javascript">
function calc()
{
var n1=f1.t1.value;
var n2=f1.t2.value;
switch(f1.opr.value)
{
case "+":
f1.result.value=Number(n1) + Number(n2);
break;
case "-":
f1.result.value=n1-n2;
break;
case "*":
f1.result.value=n1*n2;
break;
case "/":
f1.result.value=n1/n2;
}
</script>
</head>
<body>
<form name="f1">
<input type="text" name="t1">
<select name="opr">
<option value="+"> +
<option value="-"> -
<option value="*"> *
<option value="/"> /
</select>
<input type="text" name="t2">
<input type="button" value="Calculate" onclick="calc()">
<input type="text" name="result">
</form>
</body>
</html>
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