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JavaScript The Solution

Jason Hill
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.a{fill-rule:evenodd;}techdegree
Jason Hill
Full Stack JavaScript Techdegree Student 11,399 Points

Posting to get some feedback

I had to google how to get the two values to add together instead of stringing them together, but the rest I got. Any feedback on more elegance would be appreciated. I see how he did in solution by using +=, wondering if anything else could be improved!

alert("Ready to do some math? Good thing we have a computer we can program to compute!");
var firstNum = prompt("Please enter a number");
parseFloat(firstNum);

var secondNum = prompt("please enter a second number.");
parseFloat(secondNum);
var add = +firstNum + +secondNum;
var sub = firstNum - secondNum;
var mult = firstNum * secondNum;
var div = firstNum / secondNum;

// Message string and math variables
var message = "<h1>Math with the numbers  " + firstNum + " and " + secondNum + "</h1>" + "</br>" +
  firstNum + " + " + secondNum + " = " + add + "</br>" +
  firstNum + " - " + secondNum + " = " + sub + "</br>" +
  firstNum + " * " + secondNum + " = " + mult + "</br>" +
  firstNum + " / " + secondNum + " = " + div;

// Document output
document.write(message);

1 Answer

Steven Parker
Steven Parker
231,059 Points

The "parseFloat" function does not modify the argument, it's value must be assigned (or used directly in an expression).

firstNum = parseFloat(firstNum);

Then, with the prompt strings converted to numbers, you won't need those leading "+" symbols.