JavaScript Array join()

The JavaScript array join() method is used to join the elements of an array as a string.

Syntax:

array.join (separator)

Parameters:
separator: It represents the separator that will be used between array elements and it is an optional parameter.

Returns:
A string that will contain the array elements with a specified separator.

Example:

<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script>
var a = ["GOLD","SILVER","DIAMOND","RUBY","PLATINUM"]
var result=a.join()
document.writeln(result);
</script>
</body>
</html>