What’s the cleanest way to write a multiline string in JavaScript? [duplicate]

Almost identical to NickFitz’s answer:

var str = [""
    ,"line 1"
    ,"line 2"
    ,"line 3"
].join("");
// str will contain "line1line2line3"

The difference, the code is slightly more maintainable because the lines can be re-ordered without regard to where the commas are. No syntax errors.