Topic awaiting preservation: Loppy over loops (Page 1 of 1)

OK, here is the problem. I want to limit the input in the prompt to be 0-25. If the user inputs a number higher than this or uses letters, I want to have the input box pop back up and tell them to enter a valid number. Here is the code I have:

var myNumber = parseFloat(prompt("Enter a number between 1 and 25",""));

var loopCounter;

  if (!(myNumber <= 25)) {

    while (!(myNumber <= 25)) {

      parseFloat(prompt("This is an invalid entry. Enter a number between 1 and 25","")); }

  }

  else {

  for (loopCounter=0; loopCounter != myNumber; loopCounter++) {

    document.write("My nifty code here " + loopCounter + ".<P>"); }

  }

The problem is that once a person makes an invalid entry, I get an infinite while loop. Any ides on what I am doing wrong or what I can do different? Thanks.



[This message has been edited by The Jackal (edited 09-06-2003).]

[This message has been edited by The Jackal (edited 09-06-2003).]

The reason you get the infinite while loop is that you never change myNumber, you should add 'myNumber= ' in front of the second promt message.

Played some with the code and came up with this working example:

var myNumber = parseFloat(prompt("Enter a number between 1 and 25",""));

var loopCounter;

if (!(myNumber <= 25) && myNumber > 1) 

{

    while (!(myNumber <= 25)) 

    {

        myNumber = parseFloat(prompt("This is an invalid entry. Enter a number between 1 and 25","")); 

    }

}



document.write("<ul>");

for (loopCounter=0; loopCounter < myNumber; loopCounter++) 

{

    document.write("<li>My nifty code here " + loopCounter + ".</li>"); 

}

document.write("</ul>");

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