Expiration Date Color Picker

gistfile1.js

// Javascript to change color of expiration date.
//  Usage: wrap dates in YYYY-MM-DD format with <span class="expiredDate"></span>
window.onload = function() {
  var spans = document.getElementsByTagName('span');
  var l = spans.length;
  for (var i = 0; i < l; i++) {
    var spanClass = spans[i].getAttribute("class"); 
    if ( spanClass === "expiredDate" ) { 
      var definedDate = spans[i].innerHTML.split("-");
      var expiredDate = new Date(definedDate[0], definedDate[1] - 1, definedDate[2]);
      // Set to 60 day range for grace period
      var graceDate = new Date(definedDate[0], definedDate[1] - 1, definedDate[2] - 60);
      var currentDate = new Date();
      // Set to red if expired
      if(currentDate > expiredDate) {spans[i].style.color = '#cc6666';}
      // Set to yellow if in grace
      else if(currentDate < expiredDate && currentDate > graceDate) {spans[i].style.color = '#f0c674';}
      // Set to green for everything else
      else {spans[i].style.color = '#b5bd68';}
    }
  }
}