killing a port mac
sudo lsof -i :3000
                                
                            killing a port mac
sudo lsof -i :3000
                                
                            simple calculator in javascript using switch case
var num1 = parseInt(prompt("Enter a number:"));
var num2 = parseInt(prompt("Enter another number:"));
var operand = prompt("Enter an operand:");
switch(operand) {
  case "+":
    document.write("Answer: " + (num1 + num2));
    break;
  case "-":
    document.write("Answer: " + (num1 - num2));
    break;
  case "*":
    document.write("Answer: " + (num1 * num2));
    break;
  case "/":
    document.write("Answer: " + (num1 / num2));
    break;
}
                                
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