diff --git a/element.go b/element.go
index fbebcc5..5dec1aa 100644
--- a/element.go
+++ b/element.go
@@ -154,3 +154,35 @@ func (e *Element) Order(jidList []jid.Jid) {
 func (e *Element) Remove(htmlId string) {
 	e.queue(what.Remove, htmlId)
 }
+
+// ParseParams parses the parameters passed to UI() when creating a new Element,
+// setting event handlers and returning a list of HTML attributes.
+func (e *Element) ParseParams(params []interface{}) (attrs []template.HTMLAttr) {
+	for i := range params {
+		switch data := params[i].(type) {
+		case template.HTMLAttr:
+			attrs = append(attrs, data)
+		case []template.HTMLAttr:
+			attrs = append(attrs, data...)
+		case string:
+			attrs = append(attrs, template.HTMLAttr(data))
+		case []string:
+			for _, s := range data {
+				attrs = append(attrs, template.HTMLAttr(s))
+			}
+		case EventFn:
+			if data != nil {
+				e.handlers = append(e.handlers, eventFnWrapper{data})
+			}
+		default:
+			if h, ok := data.(ClickHandler); ok {
+				e.handlers = append(e.handlers, clickHandlerWapper{h})
+			}
+			if h, ok := data.(EventHandler); ok {
+				e.handlers = append(e.handlers, h)
+			}
+			e.Tag(data)
+		}
+	}
+	return
+}
diff --git a/html.go b/html.go
index 2f8d1de..baec402 100644
--- a/html.go
+++ b/html.go
@@ -34,7 +34,7 @@ func needClosingTag(tag string) bool {
 	return !ok
 }
 
-func getAttrsLen(attrs []string) (attrslen int) {
+func getAttrsLen(attrs []template.HTMLAttr) (attrslen int) {
 	for _, s := range attrs {
 		if s != "" {
 			attrslen += 1 + len(s)
@@ -43,7 +43,7 @@ func getAttrsLen(attrs []string) (attrslen int) {
 	return
 }
 
-func appendAttrs(b []byte, attrs []string) []byte {
+func appendAttrs(b []byte, attrs []template.HTMLAttr) []byte {
 	for _, s := range attrs {
 		if s != "" {
 			b = append(b, ' ')
@@ -53,7 +53,7 @@ func appendAttrs(b []byte, attrs []string) []byte {
 	return b
 }
 
-func WriteHtmlInput(w io.Writer, jid jid.Jid, typ, val string, attrs ...string) (err error) {
+func WriteHtmlInput(w io.Writer, jid jid.Jid, typ, val string, attrs ...template.HTMLAttr) (err error) {
 	need := 11 + jidPrealloc + 8 + len(typ) + 9 + len(val) + 1 + 1 + getAttrsLen(attrs) + 1
 	b := make([]byte, 0, need)
 	b = jid.AppendStartTagAttr(b, "input")
@@ -69,7 +69,7 @@ func WriteHtmlInput(w io.Writer, jid jid.Jid, typ, val string, attrs ...string)
 	return
 }
 
-func WriteHtmlInner(w io.Writer, jid jid.Jid, tag, typ string, inner template.HTML, attrs ...string) (err error) {
+func WriteHtmlInner(w io.Writer, jid jid.Jid, tag, typ string, inner template.HTML, attrs ...template.HTMLAttr) (err error) {
 	need := 1 + len(tag)*2 + jidPrealloc + 8 + len(typ) + 1 + 1 + getAttrsLen(attrs) + 1 + len(inner) + 2 + 1
 	b := make([]byte, 0, need)
 	b = jid.AppendStartTagAttr(b, tag)
@@ -89,7 +89,7 @@ func WriteHtmlInner(w io.Writer, jid jid.Jid, tag, typ string, inner template.HT
 	return
 }
 
-func WriteHtmlSelect(w io.Writer, jid jid.Jid, nba *NamedBoolArray, attrs ...string) (err error) {
+func WriteHtmlSelect(w io.Writer, jid jid.Jid, nba *NamedBoolArray, attrs ...template.HTMLAttr) (err error) {
 	need := 12 + jidPrealloc + 2 + getAttrsLen(attrs) + 2 + 10
 	nba.ReadLocked(func(nba []*NamedBool) {
 		for _, nb := range nba {
diff --git a/html_test.go b/html_test.go
index 27d8831..f1bef69 100644
--- a/html_test.go
+++ b/html_test.go
@@ -13,7 +13,7 @@ func TestHtmlInput(t *testing.T) {
 		jid   jid.Jid
 		typ   string
 		val   string
-		attrs []string
+		attrs []template.HTMLAttr
 	}
 	tests := []struct {
 		name string
@@ -35,7 +35,7 @@ func TestHtmlInput(t *testing.T) {
 				jid:   2,
 				typ:   "input_type2",
 				val:   "initial_val2",
-				attrs: []string{""},
+				attrs: []template.HTMLAttr{""},
 			},
 			want: `<input id="Jid.2" type="input_type2" value="initial_val2">`,
 		},
@@ -45,7 +45,7 @@ func TestHtmlInput(t *testing.T) {
 				jid:   3,
 				typ:   "input_type2",
 				val:   "initial_val2",
-				attrs: []string{"some_attr"},
+				attrs: []template.HTMLAttr{"some_attr"},
 			},
 			want: `<input id="Jid.3" type="input_type2" value="initial_val2" some_attr>`,
 		},
@@ -55,7 +55,7 @@ func TestHtmlInput(t *testing.T) {
 				jid:   4,
 				typ:   "input_type2",
 				val:   "initial_val2",
-				attrs: []string{"some_attr1", "", "some_attr2"},
+				attrs: []template.HTMLAttr{"some_attr1", "", "some_attr2"},
 			},
 			want: `<input id="Jid.4" type="input_type2" value="initial_val2" some_attr1 some_attr2>`,
 		},
@@ -79,7 +79,7 @@ func TestHtmlInner(t *testing.T) {
 		tag   string
 		typ   string
 		inner template.HTML
-		attrs []string
+		attrs []template.HTMLAttr
 	}
 	tests := []struct {
 		name string
@@ -113,7 +113,7 @@ func TestHtmlInner(t *testing.T) {
 				tag:   "tag1",
 				typ:   "typ1",
 				inner: "inner_text",
-				attrs: []string{"some_attr1", "some_attr2", ""},
+				attrs: []template.HTMLAttr{"some_attr1", "some_attr2", ""},
 			},
 			want: `<tag1 id="Jid.3" type="typ1" some_attr1 some_attr2>inner_text</tag1>`,
 		},
@@ -135,7 +135,7 @@ func TestHtmlSelect(t *testing.T) {
 	type args struct {
 		jid   jid.Jid
 		val   *NamedBoolArray
-		attrs []string
+		attrs []template.HTMLAttr
 	}
 	tests := []struct {
 		name string
@@ -147,7 +147,7 @@ func TestHtmlSelect(t *testing.T) {
 			args: args{
 				jid:   2,
 				val:   NewNamedBoolArray(),
-				attrs: []string{"attr1"},
+				attrs: []template.HTMLAttr{"attr1"},
 			},
 			want: "<select id=\"Jid.2\" attr1>\n</select>\n",
 		},
@@ -163,7 +163,7 @@ func TestHtmlSelect(t *testing.T) {
 					nba.Set("two", true)
 					return
 				}(),
-				attrs: []string{"", "attr2"},
+				attrs: []template.HTMLAttr{"", "attr2"},
 			},
 			want: `<select id="Jid.3" attr2>
 <option value="one">1</option>
diff --git a/request.go b/request.go
index b4a8769..6041c0c 100644
--- a/request.go
+++ b/request.go
@@ -259,8 +259,8 @@ func (rq *Request) Register(tagitem interface{}, params ...interface{}) jid.Jid
 	switch data := tagitem.(type) {
 	case jid.Jid:
 		if elem := rq.getElementByJid(data); elem != nil {
-			if uib, ok := elem.Ui().(*UiHtml); ok {
-				uib.parseParams(elem, params)
+			if _, ok := elem.Ui().(*UiHtml); ok {
+				elem.ParseParams(params)
 			}
 		}
 		return data
@@ -271,7 +271,7 @@ func (rq *Request) Register(tagitem interface{}, params ...interface{}) jid.Jid
 	uib := &UiHtml{}
 	elem := rq.NewElement(uib)
 	uib.parseGetter(elem, tagitem)
-	uib.parseParams(elem, params)
+	elem.ParseParams(params)
 	return elem.jid
 }
 
diff --git a/template.go b/template.go
index 4db9607..6474062 100644
--- a/template.go
+++ b/template.go
@@ -44,9 +44,9 @@ func (t Template) JawsRender(e *Element, w io.Writer, params []interface{}) erro
 		e.Request.tagExpanded(e, expandedtags)
 	}
 	var sb strings.Builder
-	for _, s := range parseParams(e, params) {
+	for _, s := range e.ParseParams(params) {
 		sb.WriteByte(' ')
-		sb.WriteString(s)
+		sb.WriteString(string(s))
 	}
 	attrs := template.HTMLAttr(sb.String()) // #nosec G203
 	return t.Execute(w, With{
diff --git a/uihtml.go b/uihtml.go
index 604660a..f92ac88 100644
--- a/uihtml.go
+++ b/uihtml.go
@@ -1,7 +1,6 @@
 package jaws
 
 import (
-	"html/template"
 	"io"
 
 	"github.com/linkdata/jaws/what"
@@ -28,40 +27,9 @@ func (ui *UiHtml) parseGetter(e *Element, getter interface{}) {
 	}
 }
 
-func parseParams(elem *Element, params []interface{}) (attrs []string) {
-	for i := range params {
-		switch data := params[i].(type) {
-		case template.HTML:
-			attrs = append(attrs, string(data))
-		case []template.HTML:
-			for _, s := range data {
-				attrs = append(attrs, string(s))
-			}
-		case string:
-			attrs = append(attrs, data)
-		case []string:
-			attrs = append(attrs, data...)
-		case EventFn:
-			if data != nil {
-				elem.handlers = append(elem.handlers, eventFnWrapper{data})
-			}
-		default:
-			if h, ok := data.(ClickHandler); ok {
-				elem.handlers = append(elem.handlers, clickHandlerWapper{h})
-			}
-			if h, ok := data.(EventHandler); ok {
-				elem.handlers = append(elem.handlers, h)
-			}
-			elem.Tag(data)
-		}
-	}
-	return
-}
-
-func (ui *UiHtml) parseParams(elem *Element, params []interface{}) (attrs []string) {
-	attrs = parseParams(elem, params)
-	return
-}
+/*func (ui *UiHtml) parseParams(elem *Element, params []interface{}) (attrs []string) {
+	return elem.ParseParams(params)
+}*/
 
 func (ui *UiHtml) JawsRender(e *Element, w io.Writer, params []interface{}) (err error) {
 	if h, ok := ui.Tag.(UI); ok {
diff --git a/uihtml_test.go b/uihtml_test.go
index 4816cde..82c1347 100644
--- a/uihtml_test.go
+++ b/uihtml_test.go
@@ -57,7 +57,7 @@ func TestUiHtml_JawsEvent(t *testing.T) {
 	defer close(msgCh)
 	tje := &testJawsEvent{msgCh: msgCh}
 
-	id := rq.Register(Tag("zomg"), tje, "attr1", []string{"attr2"}, template.HTML("attr3"), []template.HTML{"attr4"})
+	id := rq.Register(Tag("zomg"), tje, "attr1", []string{"attr2"}, template.HTMLAttr("attr3"), []template.HTMLAttr{"attr4"})
 
 	rq.inCh <- wsMsg{Data: "text", Jid: id, What: what.Input}
 	select {
diff --git a/uihtmlinner.go b/uihtmlinner.go
index 955e5ae..69b1bb4 100644
--- a/uihtmlinner.go
+++ b/uihtmlinner.go
@@ -11,8 +11,7 @@ type UiHtmlInner struct {
 
 func (ui *UiHtmlInner) renderInner(e *Element, w io.Writer, htmltag, htmltype string, params []interface{}) error {
 	ui.parseGetter(e, ui.HtmlGetter)
-	attrs := ui.parseParams(e, params)
-	return WriteHtmlInner(w, e.Jid(), htmltag, htmltype, ui.JawsGetHtml(e), attrs...)
+	return WriteHtmlInner(w, e.Jid(), htmltag, htmltype, ui.JawsGetHtml(e), e.ParseParams(params)...)
 }
 
 func (ui *UiHtmlInner) JawsUpdate(e *Element) {
diff --git a/uiimg.go b/uiimg.go
index bdc74d6..5d459c7 100644
--- a/uiimg.go
+++ b/uiimg.go
@@ -1,6 +1,7 @@
 package jaws
 
 import (
+	"html/template"
 	"io"
 	"strconv"
 )
@@ -20,7 +21,7 @@ func (ui *UiImg) SrcAttr(e *Element) string {
 
 func (ui *UiImg) JawsRender(e *Element, w io.Writer, params []interface{}) error {
 	ui.parseGetter(e, ui.StringSetter)
-	attrs := append(ui.parseParams(e, params), "src="+ui.SrcAttr(e))
+	attrs := append(e.ParseParams(params), template.HTMLAttr("src="+ui.SrcAttr(e)))
 	return WriteHtmlInner(w, e.Jid(), "img", "", "", attrs...)
 }
 
diff --git a/uiinputbool.go b/uiinputbool.go
index 43114a9..e6e2df9 100644
--- a/uiinputbool.go
+++ b/uiinputbool.go
@@ -14,7 +14,7 @@ type UiInputBool struct {
 
 func (ui *UiInputBool) renderBoolInput(e *Element, w io.Writer, htmltype string, params ...interface{}) error {
 	ui.parseGetter(e, ui.BoolSetter)
-	attrs := ui.parseParams(e, params)
+	attrs := e.ParseParams(params)
 	v := ui.JawsGetBool(e)
 	ui.Last.Store(v)
 	if v {
diff --git a/uiinputdate.go b/uiinputdate.go
index 86bc687..3cb6244 100644
--- a/uiinputdate.go
+++ b/uiinputdate.go
@@ -18,7 +18,7 @@ func (ui *UiInputDate) str() string {
 
 func (ui *UiInputDate) renderDateInput(e *Element, w io.Writer, jid Jid, htmltype string, params ...interface{}) error {
 	ui.parseGetter(e, ui.TimeSetter)
-	attrs := ui.parseParams(e, params)
+	attrs := e.ParseParams(params)
 	ui.Last.Store(ui.JawsGetTime(e))
 	return WriteHtmlInput(w, e.Jid(), htmltype, ui.str(), attrs...)
 }
diff --git a/uiinputfloat.go b/uiinputfloat.go
index a3d3aee..89b0dad 100644
--- a/uiinputfloat.go
+++ b/uiinputfloat.go
@@ -18,7 +18,7 @@ func (ui *UiInputFloat) str() string {
 
 func (ui *UiInputFloat) renderFloatInput(e *Element, w io.Writer, htmltype string, params ...interface{}) error {
 	ui.parseGetter(e, ui.FloatSetter)
-	attrs := ui.parseParams(e, params)
+	attrs := e.ParseParams(params)
 	ui.Last.Store(ui.JawsGetFloat(e))
 	return WriteHtmlInput(w, e.Jid(), htmltype, ui.str(), attrs...)
 }
diff --git a/uiinputtext.go b/uiinputtext.go
index 3f13de7..bed26a0 100644
--- a/uiinputtext.go
+++ b/uiinputtext.go
@@ -13,7 +13,7 @@ type UiInputText struct {
 
 func (ui *UiInputText) renderStringInput(e *Element, w io.Writer, htmltype string, params ...interface{}) error {
 	ui.parseGetter(e, ui.StringSetter)
-	attrs := ui.parseParams(e, params)
+	attrs := e.ParseParams(params)
 	v := ui.JawsGetString(e)
 	ui.Last.Store(v)
 	return WriteHtmlInput(w, e.Jid(), htmltype, v, attrs...)
diff --git a/uioption.go b/uioption.go
index d11bced..70f2d8d 100644
--- a/uioption.go
+++ b/uioption.go
@@ -2,6 +2,7 @@ package jaws
 
 import (
 	"html"
+	"html/template"
 	"io"
 )
 
@@ -9,8 +10,8 @@ type UiOption struct{ *NamedBool }
 
 func (ui UiOption) JawsRender(e *Element, w io.Writer, params []interface{}) error {
 	e.Tag(ui.NamedBool)
-	attrs := parseParams(e, params)
-	attrs = append(attrs, `value="`+html.EscapeString(ui.JawsGetString(e))+`"`)
+	attrs := e.ParseParams(params)
+	attrs = append(attrs, template.HTMLAttr(`value="`+html.EscapeString(ui.JawsGetString(e))+`"`))
 	if ui.Checked() {
 		attrs = append(attrs, "selected")
 	}
diff --git a/uitextarea.go b/uitextarea.go
index 03538ea..f78cec6 100644
--- a/uitextarea.go
+++ b/uitextarea.go
@@ -11,7 +11,7 @@ type UiTextarea struct {
 
 func (ui *UiTextarea) JawsRender(e *Element, w io.Writer, params []interface{}) error {
 	ui.parseGetter(e, ui.StringSetter)
-	attrs := ui.parseParams(e, params)
+	attrs := e.ParseParams(params)
 	return WriteHtmlInner(w, e.Jid(), "textarea", "", template.HTML(ui.JawsGetString(e)), attrs...) // #nosec G203
 }
 
diff --git a/uiwrapcontainer.go b/uiwrapcontainer.go
index edfc22e..0818171 100644
--- a/uiwrapcontainer.go
+++ b/uiwrapcontainer.go
@@ -18,7 +18,7 @@ type uiWrapContainer struct {
 
 func (ui *uiWrapContainer) renderContainer(e *Element, w io.Writer, outerhtmltag string, params []interface{}) error {
 	ui.parseGetter(e, ui.Container)
-	attrs := ui.parseParams(e, params)
+	attrs := e.ParseParams(params)
 	b := e.jid.AppendStartTagAttr(nil, outerhtmltag)
 	for _, attr := range attrs {
 		b = append(b, ' ')