Adding javascript onchange event on select tag

Rails
1

Hi,
I am writing following code for showing the drop down:-
<%= select(“test”, “type”, [“test1”, “test2”],
:onchange=>“alert(‘Test’);”)%>

My problem is I have to add onchange event and call a javascript.
Can anyone point me what is problem with my syntex?

Thanks,
Tushar

2

I am writing following code for showing the drop down:-
<%= select(“test”, “type”, [“test1”, “test2”],
:onchange=>“alert(‘Test’);”)%>

My problem is I have to add onchange event and call a javascript.
Can anyone point me what is problem with my syntex?

Easy one…

http://apidock.com/rails/ActionView/Helpers/FormOptionsHelper/select

The first hash is Select options, the second is HTML options. So you’re
passing :onchange through as an option to the Rails helper, rather than
having it pass through to an HTML attribute. What you want to do is
this:

<%= select(“test”, “type”, [“test1”, “test2”], {}
{:onchange=>“alert(‘Test’);”} )%>

Note the empty {} after your normal parameter, that’s the empty select
options, then your :onchange is in the HTML options hash.

Cheers,

Andy

3

I am having in rendering the onchange:
My syntax is:

<%= f.select :country, {“Afghanistan” => “Afghanistan”,
“Aland Islands” => “Aland Islands”,
“Zimbabwe” => “Zimbabwe”
}, :prompt => “Select”,
:html_options=>{:onchange=>“display();”} %>

Can you point out the mistake in this syntax??