Question

In jQuery is it possible to create a function that sets a variable which I can then access in another function. i.e. I need a global variable that can be accessed anywhere on the page.

Examples

$.fn.getRedemptionID = function(){
  var myVar = data.DATA[0].item1;
}

Answer 1

1) Global variables are bad.

2) Yes:

// explicit global (preferred)
$.fn.getRedemptionID = function(){
  window.myVar = data.DATA[0].item1;
}

// implicit global
$.fn.getRedemptionID = function(){
  myVar = data.DATA[0].item1;
}