Resolve function parameters

JavaScript
1

Got a simple object (demo purposes only) and want to return values using a function but having major issues getting it to work. Here is the code and error I get:

const obj = {
“Alfred”:{“sex”:“M”, “weight”:112.5},
“Alice”:{“sex”:“F”, “weight”:84},
“Barbara”:{“sex”:“F”, “weight”:98}
};
function getData(key, name) {
const retval = obj[key].[name];
return retval;
};

getData(“Barbara”, “weight”)

Uncaught SyntaxError: Unexpected token ‘[’

How can I get this to work?

2

there is no need of a dot here

3

Thanks so much for the reply. Can’t tell you how much time I wasted trying to figure it out…

1 Like
4

I see that instead of even having to create a function I can get the same results doing this:

obj['Barbara'].weight  // 98
obj.Barbara.weight      //  98

What is the correct type of object here - is it a hash?

5

Not sure what you mean?

It’s just an object of objects. Objects are a collection of properties and properties are key/value pairs. Object keys are strings. You can call it a hash map/table/whatever, but it is still just an object in JS.

There is also Map and Set (and the Weak versions).

6

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