diff --git a/mono_fallback.go b/mono_fallback.go
index 3042458..bdedba4 100644
--- a/mono_fallback.go
+++ b/mono_fallback.go
@@ -14,6 +14,7 @@
 
 // +build !linux !amd64,!arm
 // +build !windows
+// +build !js
 
 package monotime
 
diff --git a/mono_js.go b/mono_js.go
new file mode 100644
index 0000000..a029d8c
--- /dev/null
+++ b/mono_js.go
@@ -0,0 +1,32 @@
+// Copyright (C) 2015 Space Monkey, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !linux !amd64,!arm
+// +build !windows
+// +build js
+
+package monotime
+
+import (
+	"github.com/davecheney/junk/clock"
+)
+
+func monotime() (sec int64, nsec int32) {
+	time := clock.Monotonic.Now()
+
+	sec = time.Unix()
+	nsec = int32(time.UnixNano())
+
+	return sec, nsec
+}