Merge pull request #3 from thediamantaire/master

"IsUndefined()" replaced by "== js.Undefined", as in gopherjs/js/js.go

Author: rusco

jquery.go

@@ -317,7 +317,7 @@ func (j JQuery) RemoveProp(property string) JQuery {
 
 func (j JQuery) Attr(property string) string {
 	attr := j.o.Call("attr", property)
-	if attr.IsUndefined() {
+	if attr == js.Undefined {
 		return ""
 	}
 	return attr.Str()
@@ -546,7 +546,7 @@ func (j JQuery) SetData(key string, value interface{}) JQuery {
 
 func (j JQuery) Data(key string) interface{} {
 	result := j.o.Call("data", key)
-	if result.IsUndefined() {
+	if result == js.Undefined {
 		return nil
 	}
 	return result.Interface()

test/test/index.go

@@ -494,7 +494,7 @@ func main() {
 	QUnit.Test("On,One,Off,Trigger", func(assert QUnit.QUnitAssert) {
 
 		fn := func(ev jquery.Event) {
-			assert.Ok(!ev.Data.IsUndefined(), "on() with data, check passed data exists")
+			assert.Ok(!ev.Data == js.Undefined, "on() with data, check passed data exists")
 			assert.Equal(ev.Data.Get("foo"), "bar", "on() with data, Check value of passed data")
 		}