You have to escape string values to provide valid string literals.

Use following to reproduce defect in your function.

Since setTimeout (and setInterval) will take a function as an argument, you don't need to stringify. It's less bug-prone too (what if one of your array elements had a comma in it, or was an object not easily stringified?) See snippet below.

"["+myArray.toString()+"]"

It's already done for you. And if you find yourself going through the trouble in the first place you're already doing something wrong.

The only time I've ever done anything close is for XMLHttpResponse Server -> Client ... and even that's a hack IMO.

Yeesh.