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viverosm's avatar
viverosm
New Contributor
10 years ago
Solved

instance of operator for different Checkpoint types

Hello, I have an array of objects used in checkpoints and wanted to iterate over it and do different things based on the type of object (if it's a Table, do A, if it's a Region, do B). I am usi...
  • Philip_Baird's avatar
    Philip_Baird
    10 years ago
    Hi Michael, as per the documentation here, instanceof is a native JScript operator that tests whether an object has in its prototype chain the prototype property of a constructor.


    Therefore, it will only work if the Table and Region Objects are native JScript Objects, which I would doubt.


     


    Also, how are you able to get an Array of Table and Region checkpoints, I could not find any way to achieve this.


     


    It may be that the error saying Table is undefined is being raised as Table does not exist as an Object.


     


    Regards,


    Phil Baird

viverosm's avatar
viverosm
New Contributor
10 years ago
Hey Phil,



Thanks for the replies. It makes sense now why instance of does not work since Regions and Tables are not native JScript objects and a constructor was never used to create them. Wrapping each object in a constructor is a creative work-around too. I ended up just ordering the objects in the array in a specific way so that they could be iterated over in groups. The code is a bit messier / longer and not that maintainable but gets the job done for now and is less work than calling that constructor for each Region / Table in the array.



Below is how I defined an array of Region and Table objects (not checkpoints), assuming these objects have already been created in the Regions and Tables data stores of the project:


 


var T3_CHECKS3 = [Regions.T3_Comm, Tables.T3_Sigs, Tables.T3_Sigs2, Regions.T3_Dialog1, Regions.T3_Dialog2];



I then do the checkpoints by making calls like T3_CHECK3[0].Check(ValidRegion) and T3_CHECKS[1].Check().



Michael