passing data to javascript function

rubyonrails-talk
1

Hi, everyone. Is it possible to pass a local variable to a javascript function? I have a javascript function in application.js, and try to pass a local variable to the function in index.html.erb. If I passed a string like 'the string', it worked fine. But when I passed a local variable, the function didn't run. The function works fine except the fact that it can't recognize the local variable. Any hint would be appreciated. Thanks in advance.

2

Hi Ichiro,

3

Thanks for the reply, Bill. The local variable is an element in an array of strings. When I tried js_function(local_variable.to_s), it said local_variable is undefined. When I tried js_function(local_variable), the output was "object HTMLDivElement". Did I miss someting?

bill walton wrote:

4

give the value of such function wat you want, but as string, such as this in a view:   :onclick => "toggle_memos('#{memos[:name]}')" or   :onclick => "toggle_memos('something')" and in your *.js   function toggle_memos(foo) {     // doSomethingUsefullWithFoo     console.log(foo);   };

LeFnod

5

You would need some escaping so that the "local_variable.to_s" bit gets evaluated by Ruby. Like maybe:

js_function(<%= local_variable.to_s %>)

or

<%= "js_function(#{local_variable.to_s})" %>

6

Ritchie Young wrote: