Jade conditional (if/else) to add class to div inline

Question

Jade conditional (if/else) to add class to div inline

Is there a way to do this inline in a jade template?

if(typeof fromEdit != 'undefined')
   div#demo.collapse.in
else
   div#demo.collapse

Would like to do this conditional check "inline" and the result would add the .in to the end of the div if fromEdit exists.

javascript
node.js
express
jade

Answer 1

This works:

div#demo.collapse(class=typeof fromEdit === "undefined" ? "" : "in")

Try it out here.

Answer 2

(This would be a comment if I could add one.)

If you don't want the class attribute to be added when there is no value, you can assign it undefined instead of an empty string. Here is the previous example, slightly modified:

div#demo.collapse(class=typeof fromEdit === "undefined" ? undefined : "in")