Default offset Y to 0px for sticky header example, if top fixed navbar not present

Author: Vincent Loh

extensions/sticky-header.html

@@ -31,7 +31,8 @@ <h1>Sticky Header</h1>
     function buildTable($el, cells, rows) {
         var i, j, row,
                 columns = [],
-                data = [];
+                data = [],
+                stickyHeaderOffsetY = 0;
 
         for (i = 0; i < cells; i++) {
             columns.push({
@@ -47,12 +48,20 @@ <h1>Sticky Header</h1>
             }
             data.push(row);
         }
+
+        if ( $('.navbar-fixed-top').css('height') ) {
+            stickyHeaderOffsetY = +$('.navbar-fixed-top').css('height').replace('px','');
+        }
+        if ( $('.navbar-fixed-top').css('margin-bottom') ) {
+            stickyHeaderOffsetY += +$('.navbar-fixed-top').css('margin-bottom').replace('px','');
+        }
+
         $el.bootstrapTable('destroy').bootstrapTable({
             columns: columns,
             data: data,
             search: true,
             stickyHeader: true,
-            stickyHeaderOffsetY: +$('.navbar-fixed-top').css('height').replace('px','') + +$('.navbar-fixed-top').css('margin-bottom').replace('px','') + 'px'
+            stickyHeaderOffsetY: stickyHeaderOffsetY + 'px'
         });
     }
 </script>