method
button_to_function

button_to_function(name, function=nil, html_options={})
public
Returns a button whose onclick handler triggers the passed JavaScript.
The helper receives a name, JavaScript code, and an optional hash of HTML options. The name is used as button label and the JavaScript code goes into its onclick attribute. If html_options has an :onclick, that one is put before function.
button_to_function "Greeting", "alert('Hello world!')", :class => "ok" # => <input class="ok" onclick="alert('Hello world!');" type="button" value="Greeting" />