JavaScript Scratch Page

// Ask the user for a phone number phrase. var phrase = prompt('Please enter a phone number "phrase:"'); // Association of each letter with the number of the phone key. var conversion = { A: 2, B: 2, C: 2, D: 3, E: 3, F: 3, G: 4, H: 4, I: 4, J: 5, K: 5, L: 5, M: 6, N: 6, O: 6, P: 7, Q: 7, R: 7, S: 7, T: 8, U: 8, V: 8, W: 9, X: 9, Y: 9, Z: 9 }; // Build up the phone number one digit at a time. var phoneNumber = ""; for (var index = 0, length = phrase.length; index < length; index += 1) { var symbol = phrase[index].toUpperCase(); phoneNumber += conversion[symbol] || symbol; } alert("You want to dial " + phoneNumber + ".");