join()

Can anybody guide me..

How to use "join()" to create a string from an array using JavaScript?

"join" concatenates the array elements with a specified separator between them.

<s-cript type="text/j-avascript">
var days = ["Sunday","Monday","Tuesday","Wednesday", "Thursday","Friday","Saturday"];
document.write("days:"+days.join(","));
</script>

This produces
days:Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday