how to access javascript variable in rails view

Question

Is there any way to access javasript variable inside the rails view. I just set some value of javascript variable and want to access it in rails view.

Thanks

Answer 1

You have to understand that ruby code in your views gets executed on the server - before any javascript on the page gets a change to be executed.

That's why you cannot do stuff like this:

<script>
  var js_var = 1;
</script>

<%= get_value_of_js_var_somehow %>

The other way round it works:

<script>
  var js_var = <% generate_value_with_ruby %>;
  do_something_in_javascript_with_js_var();
</script>