Javascript property access speed: difference var.property vs. var[“property”]?

Question

I have a very basic JavaScript question.

I am writing a program which will generate JavaScript code. for accessing a property of a variable i have two choices:

Answer 1

Emphazise code reusability and maintainability. When you are done, and IF it runs slow, try to see WHERE it is running slow and better it.

So, is there any difference between object.property and obj["property"] in terms of eficciency? I don't think so, but mostly I don't think you should bother until you have encountered a performance issue with your finished, working code. This last part should be your worry.

And even if you find out that your code runs slow, I bet you this will NOT be the reason.