Engine.loadFromJSON if undefined...

[DanH]

I use Engine.loadFromJSON to load a settings file to configure a few bits and pieces. I'm trying to add a new line of data (not normally an issue) but in this case I want something to happen if the data doesn't exist (yet). So for new users this works fine but for existing users who already have a Settings.json file but which doesn't contain the new line of data I can't find a way of checking if the data exists or not and, if not, doing something... Any ideas welcome! My script below....

reg myJSONObj = Engine.loadFromJSON("..//Settings.js");

if(myJSONObj == "")
{
    myJSONObj = {
                          "analysers": 1,
                          "nodes": 1,
                          "lock": 0,
                          "newthing": 1

               };
    Engine.dumpAsJSON(myJSONObj , "..//Settings.js");
 
};

inline function checkOnLoadSettings()
    {
        local data = Engine.loadFromJSON("..//Settings.js");
        
    if ((data.newthing) !isDefined)
    //if (data.newthing == "")
    {
    	    newthing.showControl(1);

    }

[d.healey]

@DanH said in Engine.loadFromJSON if undefined...:

if ((data.newthing) !isDefined)

isDefined is a function.

if (!isDefined(data.newThing))

[DanH]

@d-healey said in Engine.loadFromJSON if undefined...:

if (!isDefined(data.newThing))

Hmmm... I had tried that. No errors but doesn't do the new thing either....

EDIT - Actually I'd already written some other stuff below which cancelled out the changes to this if statement

So it did work, thanks for confirming!!