javascript array as a list of strings (preserving quotes)

I've got an array of strings. When I use .toString() to output it the quotes are not preserved. This makes it hard to build the mysql query using an "in". Consider the following:

SELECT * FROM Table WHERE column IN ('item1','item2','item3','item4')

toString is returning: IN (item1,item2,item3,item4)

There must be a simple fix I am overlooking here.