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JavaScript The Solution

Someone plz look at my code?!

// 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("lets do some math");
// 3. Create a variable and use the prompt() method to collect a number from a visitor
var first_number = prompt("Enter a number");
// 4. Convert that value from a string to a floating point number
    first_number = parseFloat(first_number);
// 5. Repeat steps 3 and 4 to create a second variable and collect a second number
var second_number = prompt("Please enter another number");
    second_number = parseFloat(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 " + first_number + " and " + second_number + "</h1>"; 
// 7. Add another string to the message variable. 
//    The string should look something like this after concatenation:
//    "3 + 4 = 7"
message += num1 + " + " + num2 + " = " + num1 + num2;
// 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
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Hi Nick,

I've added some forum markdown to your post just to help people read the code you've posted. It will help in future if you can add markdown when posting code to the forum, either manually or ticking the box when adding directly from a c code challenge you're on. Check out the Markdown Basics course for more info.

Also can you tell us what you're struggling with specifically? Thanks :)

Ali .
Ali .
15,521 Points

If you like to write code by your ways such as first_number or second_number? That smart way, but make sure all variable is the same thing.

Remove all var num1 to first_number, and var num2 to second_number.

2 Answers

In addition to the previous answers you'll want to include parentheses to have your result be addition instead of concatenation like this:

message += first_number + " + " + second_number + " = " + (first_number + second_number);

i definitely agree with you KRIS.

You will need to change your num1 and num2 variables to first_number and second_number. The variable names need to match throughout unless you set your first_number variable to be your num1 variable later. Other than that it looks fine.