function calculate(num1, num2, method) {
if (method === "sum") {
var sum = num1 + num2;
console.log("summation = " + sum);
}
else if (method === "sub") {
var sub = num1 - num2;
console.log("subtraction = " + sub);
}
else if (method === "multi") {
var multi = num1 * num2;
console.log("multiplication = " + multi);
}
else if (method === "divid") {
var divid = num1 / num2;
console.log("division = " + divid);
}
else{
console.log("Unknown Method, Try Agin");
}
}
calculate(1,2, "daaaa"); //Unknown Method, Try Agin
calculate(1,2, "sum"); //summation = 3
calculate(1,2, "multi"); //multiplication = 2