CODEWITHSUNDEEP
javascript
Carpetfizz
Carpetfizz

Reputation: 9169

Access object properties after they are assigned by another function

I'm new to Javascript, and I'm learning how to use OOP principals. I'm stuck on assigning object properties and then accessing them later. Let's say I have this function that assigns properties to an object "Car".

function assignProps()
{
Car.size="small";
Car.cost="expensive";
}

The object Car with empty properties because they are assigned from the function.

var Car =
{
size:"",
cost:"",
returnSize: function()
            {
           return this.size;
            },
returnCost: function()
            {
           return this.cost;
            },

}

Now, I want to call the function that assigned the value, and then access Car's properties. I tried doing this, but it obviously failed:

function accessProps()
{

assignProps();
console.log(Car.returnSize());
console.log(Car.returnCost());

}

Any help would be appreciated. I have a feeling that this might have to do with constructors or prototypes, but since there are so many ways to create custom objects in Javascript, the documentations are very confusing.

EDIT: By "fail" I mean that it outputs the blank instead of the newly assigned value EDIT: I tried doing it this way as well, and it yielded the same result.

Upvotes: 0

Views: 52

Answers (3)

user2509223
user2509223

Reputation:

Line 18, column 14: Extra comma.

Line 20, column 2: Missing semicolon.

Try to get a developing tool with JSLint/JSHint built-in (e.g. Notepad++ with add-on), it might help you with debugging problems like this.

Upvotes: 0

gerrytan
gerrytan

Reputation: 41133

You have a syntax error on your car object initialization, should be

var Car = { size: "", cost: "" };

Upvotes: 0

Thomas Junk
Thomas Junk

Reputation: 5676

You have some errors in your code:

var Car = {
   size:"",
   cost:""
}

And if you look at this fiddle: http://jsfiddle.net/JskBy/ It works as expected.

Full code:

function assignProps() {
    Car.size="small";
    Car.cost="expensive";
}

var Car ={
    size:"",
    cost:""
}
function accessProps(){
  assignProps();
  console.log(Car.size);
}

assignProps();
accessProps();

Upvotes: 1

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