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

var foo = dashboard['pages'] || {};
foo['pagename'] = 'your thing here';
dashboard['pages'] = foo;

Explaining: the first line will check if the first value is null, undefined or... false (don't think this is a problem here): if it is, create a new object, if it is not, will use it.