Code/Prompts not working

HTML looks exactly like in the video

JS

// 1. Attach this file -- math.js -- to the index.html file using a <script> tag

// 2. Add an alert to announce the program with a message like "Let's do some math!" alert("Let's do some math!");

// 3. Create a variable and use the prompt() method to collect a number from a visitor var yourAge = prompt("What is your age?"); var yourHeight = prompt("What is your height in inches?"); // 4. Convert that value from a string to a floating point number yourAge = parseFloat(yourAge); yourHeight = parseFloat(yourHeight); // 5. Repeat steps 3 and 4 to create a second variable and collect a second number

// 6. Create a new variable -- message -- which you'll use to build // a complete message to print to the document // Start by creating a string that includes <h1> tags as well // and the two input numbers. The string should look something like this: // "<h1>Math with the numbers 3 and 4</h1>" where the two numbers are // the values input from the user. Use string concatenation to create this // and make sure you actually perform the math on the values by // using the + symbol to add their values together var message = "<h1>Math with the numbers " + yourAge +"and " + yourHeight</h1>" <p>yourAge + " + " yourHeight " = " (yourAge+yourHeight)</p> <br>yourAge + " - " yourHeight " = " (yourAge-yourHeight);

// 7. Add another string to the message variable. // The string should look something like this after concatenation: // "3 + 4 = 7"

// 8. Add a linebreak tag -- <br> -- to the message variable

// 9. Continue to add to the message variable to include strings // demonstrating multiplication, division and subtraction // For example: // "3 * 4 = 12" // "3 / 4 = 0.75" // "3 - 4 = -1"

// 10. Use the document.write() method to print the message variable // to the web page. Open the finished.png file in this workspace // to see what the completed output should look like

document.write(message);