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JavaScript Object-Oriented JavaScript (2015) Introduction to Methods Object Literal Review

Posted by Naresh Babu Perini Balaji
Naresh Babu Perini Balaji
1,128 Points

Whats the right answer for this question? Whichever answer I choose, it says am wrong.

Which of these is NOT the right way to access property "name" on an Object?

cat.name

cat["name"]

var key="name";cat.key

var key="name";cat[key]

1 Answer

Jacob Tollette
Jacob Tollette
27,884 Points
Jacob Tollette
Jacob Tollette
27,884 Points

As Robert said, the third option is NOT the right way to access the property.

Option 1 is normal dot notation for accessing properties.

Option 2 would be normal square-bracket notation.

Option 4 is just another way to do square-bracket notation and would read like this to the interpreter:

var key = "name";
cat["name"];

Option 3 would be some unholy crossbreeding of both and would read something like this to the interpreter:

var key = "name";
cat."name";

I hope that clears things up.