demo/www/lib/ionic/js/ionic.bundle.js
function(scope, element, attr) {
        attr.$observe(ngAttrName, function(value) {
          if (!value) {
            element[0].removeAttribute(attrName);
          }
        });
      }
function(scope, element, attr) {
        attr.$observe(ngAttrName, function(value) {
          if (!value) {
            element[0].removeAttribute(attrName);
          }
        });
      }
function ( scope , element , attr ) { attr . $observe ( ngAttrName , function ( value ) { if ( ! value ) { element [ 0 ] . removeAttribute ( attrName ) ; } } ) ; }
it needs to run after the attributes are interpolated
it needs to run after the attributes are interpolated