adding to json property that may or may not exist yet

Question

let say I want to do this:

  var dashboard = {};
  var page = \"index\";

  $(\'.check\').click(function(){ 
    $(thi         


        

Answer 1

I would do it with the ternary operator:

dashboard['pages'][page] = dashboard['pages'][page] ? dashboard['pages'][page] : {};

That will do the trick no matter if it's set/null or whatever.