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Why can't I wait for a flag that is set in an synchronous function

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From	"Tony" <tony.johansson@inport.com>
Newsgroups	comp.lang.javascript
Subject	Why can't I wait for a flag that is set in an synchronous function
Date	Wed, 24 Apr 2013 15:12:38 +0200
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The function GetBooking() is using asynchronous communication to get data 
from the database.
I want to wait by using the while loop until the ready flag is set in the 
GetBooking function  to true and then continue with the array that was 
loaded in the
GetBooking().

I use setInterval to call a function CheckUntilAsyncComplete that will check 
if the ready flag has been set to true.
This works only if I add an alert to the while loop.
It seems to me that if I don't have an alert It will execute and never call 
the  CheckUntilAsyncComplete


$(function ()  //wait until the DOM writing is complete
  {
      GetBooking();
      status = setInterval(CheckUntilAsyncComplete()', 1000);

      while (!ready)
      {
          //alert("Looping");
      }

   //Here I want to use the array that is filled in GetBooking()
  });

function CheckUntilAsyncComplete()
   {
       if (ready)
       {
           clearInterval(status);
       }
   }

//Tony

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Why can't I wait for a flag that is set in an synchronous function "Tony" <tony.johansson@inport.com> - 2013-04-24 15:12 +0200
  Re: Why can't I wait for a flag that is set in an synchronous function JJ <duh@nah.meh> - 2013-04-25 01:49 +0700

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