Need help with Javascript

Hi Experts
I need help with Javascript...


function ticket(){
      
var ticketType = prompt("what sort of tickets do you want?");
var ticketQty = parseInt(prompt("how many tickets do you want?"));
var ticketPrice;
switch (ticketPrice){
      case "A":
      case "100":
      break;
      case "B":
      case "75":
      break;
      case "C":
      case "50":
      break;
      case "!A":
      case "!B":
      case "!C":
      document.write("Invalid Ticket Type");
      break;
      case
}
document.write("Ticket type is " + ticketType + "<br>");
document.write("Ticket quantity is " + ticketQty);
}
Snowbella HatchikoAsked:
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Kim WalkerWeb Programmer/TechnicianCommented:
What kind of help do you need?

One obvious error with the code is that your switch is comparing the value of ticketPrice which hasn't been given a value.

Another obvious error is the last line of your switch which is incomplete (see line 3 of the snippet below).
      document.write("Invalid Ticket Type");
      break;
      case
}

Open in new window


What is your objective? What are you trying to do?
0
Julian HansenCommented:
You are using document.write in a function based on user input which is not going to work.

document.write will write to the document on load at the point the script is found.

You probably want something like this
<!doctype html>
<html>
<body>
Tickets <button onclick="ticket()">Click To Buy Tickets</button>
<div id="result"></div>
<script>
var TicketTypes = ['A','B','C'];
function ticket()
{
  var ticketType = prompt("what sort of tickets do you want?");
  var ticketQty = parseInt(prompt("how many tickets do you want?"));
  var valid = false;
  for(var i in TicketTypes) {
    if (ticketType == TicketTypes[i]) {
      valid = true;
      break;
    }
  }
  
  if (valid) {
    document.getElementById('result').innerHTML = 'Ticket Type is: ' + ticketType + '<br/>Ticket Quantity is: ' + ticketQty;
  }
  else {
    document.getElementById('result').innerHTML = 'Invalid Ticket Type';
  }
}
</script>
</body>
</html>

Open in new window

Working sample here
0

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