Lab: Simple Calculator with Dialogs | Module 3: Operators and User Interaction

Module 3: Operators and User Interaction

Lab: Simple Calculator with Dialogs

Build a simple calculator that asks the user for two numbers and an operation, then displays the result using alert().

Use `prompt()` to ask the user for the first number. Convert the input to a `Number`.
Use `prompt()` to ask the user for the second number. Convert the input to a `Number`.
Use `prompt()` to ask the user for an operation (e.g., "+", "-", "*", "/").
Use `if`, `else if`, and `else` statements (or a `switch` statement) to check the operation entered.
Based on the operation, perform the corresponding arithmetic calculation.
If the operation is division, check if the second number is zero. If it is, `alert()` an error message like "Cannot divide by zero!".
If the operation is valid and calculable, `alert()` the result in a user-friendly format (e.g., "Result: 5 + 3 = 8").
If an invalid operation symbol is entered, `alert()` a message like "Invalid operation.".

JavaScript Code Editor:

Output Console:

Output will appear here...

JavaScript execution is sandboxed. Output from `console.log()` and errors will appear above.