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JavaScript The Solution

Veselin Radosavljevic
Veselin Radosavljevic
3,863 Points

my solution to exercises

// 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 firstNum =prompt ('enter first num'); // 4. Convert that value from a string to a floating point number

firstNum =parseFloat(firstNum); // 5. Repeat steps 3 and 4 to create a second variable and collect a second number

var secondNum =prompt ('enter second num');

secondNum =parseFloat(secondNum); // 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 numbers ${firstNum} and ${secondNum} <h1>; document.write(message);

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

var calculate =${firstNum} + ${secondNum} = ${firstNum + secondNum} <br>; document.write(calculate);

var subtract =${firstNum} - ${secondNum} = ${firstNum - secondNum} <br>; document.write(subtract);

var multiply =${firstNum} * ${secondNum} = ${firstNum * secondNum} <br>; document.write(multiply);

var divide =${firstNum} / ${secondNum} = ${firstNum / secondNum} <br>; document.write(divide);

// 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

1 Answer