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JavaScript The Solution

Jason Hill
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Jason Hill
Full Stack JavaScript Techdegree Student 11,399 Points
Posted by Jason Hill
.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
231,184 Points
Steven Parker
Steven Parker
231,184 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.