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Need help with Javascript

Posted on 2016-10-16
4
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Last Modified: 2016-11-05
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);
}
0
Comment
Question by:Snowbella Hatchiko
4 Comments
 
LVL 22

Assisted Solution

by:Kim Walker
Kim Walker earned 150 total points (awarded by participants)
ID: 41846134
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
 
LVL 54

Accepted Solution

by:
Julian Hansen earned 350 total points (awarded by participants)
ID: 41846232
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>

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Working sample here
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