For my module, I need to declare an unknown sized array of user defined objects with two properties: datatype and FullName. I want to be able to set these properties to null upon creation.
I tried the below code.
var result = [{ dtype:null, fname:null, }];
I get the error: Uncaught TypeError: Cannot set property 'dtype' of undefined.
Any thoughts?
So javascript doesn't support defining or restricting types that go into an array, and you don't have to specify a size either, you can just keep adding those object to it natively
But if you wanted to restrict the types that went into it there is a way
function addThing(thing) {
if(thing.hasOwnProperty("fullName") && thing.hasOwnProperty("dataType")) {
array.push(thing);
}
}
Applying Noah s logic, I tried this solution which worked for me.
var result = [];
Have a temp object:
var resultItem = {};
set the values of temp object.
resultItem.fname = resultsinJson.Data[i][keys];
resultItem.dtype = resultsinJson.Data[i][keys] ;
and then add that object to the final array
result[i] = resultItem;
var foo = [];