JavaScript array element to string -

i have simple array , want generate string include elements of array, example:

the array set follow:

array[0] = uri0 array[1] = uri1 array[2] = uri2

and output string must

teststring = uri0,uri1,uri2

i've tried make following way (using loop):

var teststring = ""; teststring = teststring+array[y]

but in firebug console see error message:

"teststring not defined"

i don't know, i'm doing wrong. can give me hint?

you must use join function on array:

var teststring = array.join(",");

O9