diff --git a/js/src/x-dust.js b/js/src/x-dust.js
index d5b1819..ec32ffc 100755
--- a/js/src/x-dust.js
+++ b/js/src/x-dust.js
@@ -33,7 +33,7 @@ THE SOFTWARE.
 var BREAK = false,
     UNDEFINED,
     OPERATORS = ['~', '#', '?', '@', ':', '<', '>', '+', '/', '^'],
-    OPERATORS_WITH_BODY = ['#', '?', '@', ':', '+', '<'],
+    OPERATORS_WITH_BODY = ['#', '?', '@', ':', '+', '<', '^'],
     dust;
 
 function _hasProp(obj, name) {
@@ -482,8 +482,13 @@ var XDustContext = _extend(function(head, tail, params) {
   XDustNotExistsNode = _extend(XDustExistsNode, function() {
     XDustExistsNode.apply(this, arguments);
   }, {
-    prepareModel: function(chain, context, model) {
-      return this.context.resolve(context, model) ? 'else' : 'block';
+    operator: '^',
+    chooseBodyName: function(context, model) {
+      var resolved = this.context.resolve(context, model);
+      if (_isInstance(resolved, Array) && resolved.length < 1) {
+        resolved = false;
+      }
+      return resolved ? 'else' : 'block';
     }
   }),
   XDustHelperNode = _extend(XDustLogicNode, function(name, scope, params, blocks, bodies) {
@@ -657,6 +662,8 @@ var XDustContext = _extend(function(head, tail, params) {
             }
           } else if (operator == '?') {
             node = new XDustExistsNode(tagName, scope, params);
+          } else if (operator == '^') {
+            node = new XDustNotExistsNode(tagName, scope, params);
           } else if (operator == '@') {
             name = tag[0].slice(1);
             if (name == 'idx') {
diff --git a/js/test/unit/x-dust.js b/js/test/unit/x-dust.js
index 07f9986..d3d9f8b 100644
--- a/js/test/unit/x-dust.js
+++ b/js/test/unit/x-dust.js
@@ -71,6 +71,13 @@ describe('x-dust', function() {
     it('can test logic without consuming scope', render('ex', '{?tags}<ul class="{foo}">{#tags}<li>{.}</li>{/tags}</ul>{:else}No tags!{/tags}', {foo: 'bar', tags: ['a', 'b', 'c']}, '<ul class="bar"><li>a</li><li>b</li><li>c</li></ul>'));
     it('can support an else block', render('ex', '{?tags}<ul class="{foo}">{#tags}<li>{.}</li>{/tags}</ul>{:else}No tags!{/tags}', {foo: 'bar', tags: []}, 'No tags!'));
   });
+  describe('^ operator', function() {
+    it('can output inner content when tested against an undefined value', render('ex', '{^tags}No tags!{:else}Yes tags!{/tags}', {foo: 'bar'}, 'No tags!'));
+    it('can output inner content when tested against a defined but falsey value', render('ex', '{^tags}No tags!{/tags}', {foo: 'bar', tags: 0}, 'No tags!'));
+    it('can output inner content when tested against an empty array', render('ex', '{^tags}No tags!{/tags}', {foo: 'bar', tags: []}, 'No tags!'));
+    it('can ignore inner content when tested against a truthy value', render('ex', '{^tags}no {/tags}tags here', {foo: 'bar', tags: ['a', 'b', 'c']}, 'tags here'));
+  	it('can support an else block', render('ex', '{^tags}No tags!{:else}<ul class="{foo}">{#tags}<li>{.}</li>{/tags}</ul>{/tags}', {foo: 'bar', tags: ['a', 'b', 'c']}, '<ul class="bar"><li>a</li><li>b</li><li>c</li></ul>'));
+  });
   describe('! operator', function() {
     it('can comment out multiple lines of text', render('ex', '{!\nMultiline {#foo}{bar}{/foo}!}{!before!}Hello{!after!}', {}, 'Hello'));
   });