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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Javascript Simple Calculator</title>
</head>
<body>
<script>
const num1 = parseFloat(prompt("Enter your first number: "));
const op_list = prompt('Enter operator ( either +, -, *, / or % ): ');
const num2 = parseFloat(prompt("Enter your second number: "));
let result;
if (op_list == "+") {
result = num1 + num2;
}
else if (op_list == "-") {
result = num1 - num2;
}
else if (op_list == "*") {
result = num1 * num2;
}
else if (op_list == "/") {
result = num1 / num2;
}
else if (op_list == "%") {
result = num1 % num2;
}
else {
alert("You've entered an invalid operator");
result = NaN
}
alert("Your result is: " + result);
</script>
</body>
</html>