Rails和JQuery从数组中选择一个随机项目

Question

I feel like I'm pretty close here trying to select a random image from my assets path and set it as the background.

birds = ['birdonbranch.jpeg', 'birdsfighting.jpg', 'cranes.jpg', 'rainbowbird.jpeg', 'whitebird.jpeg'];
birdSample = birds.sample
$("html").css({"background-image":"url(" + "<%= asset_path(" + birdSample + ") %>" + ")"});

Answer 1

Wrap the first two lines in <%...%>

But you might look into http://reactrb.org which allows you to develop in straight Ruby. Much less confusing IMHO

Answer 2

If this is a .js.erb file, your ruby code should be wrapped in <% %> .

<% 
  birds = ['birdonbranch.jpeg', 'birdsfighting.jpg', 'cranes.jpg', 'rainbowbird.jpeg', 'whitebird.jpeg'];
  birdSample = birds.sample
%>

$("html").css({
  "background-image": url("<%= asset_path(birdSample) %>")
});