# Add classname to Interact dropdown widget

**URL:** <https://discourse.julialang.org/t/add-classname-to-interact-dropdown-widget/68993>\
**Category:** Web Stack\
**Created:** [September 30, 2021, 12:04pm UTC](https://discourse.julialang.org/t/add-classname-to-interact-dropdown-widget/68993 "2021-09-30T12:04:27Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![cwiese](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cwiese/32/4295_2.png) [@cwiese](https://discourse.julialang.org/u/cwiese)\
**Post date:** [September 30, 2021, 12:04pm UTC](https://discourse.julialang.org/t/add-classname-to-interact-dropdown-widget/68993/1 "2021-09-30T12:04:27Z")

</div>

I am using Interact (Blink) - I create a dropdown widget

```julia
 ddl = dropdown(Observable(attr_values));

```

I would like to add “loader is-active” classname to the Select … when a value is selected and remove when the data comes back from DB. How?

I was hoping for something like this

```julia
ddl[:attributes] = "loader is-active"

```

Is it possble ?

for a button I use

```julia
 chart_butt["is-loading"][]=true

```