join

string

Joins array elements into a string with a separator

Syntax

join(array, separator)

array (array)

The array of elements to join

separator (string)

The delimiter to place between elements

string

String with joined array elements

Input:

join(["a", "b", "c"], ",")

Output:

"a,b,c"

Input:

join(["hello", "world"], " ")

Output:

"hello world"

Input:

["x", "y", "z"] | join("-")

Output:

"x-y-z"

The join() function combines array elements into a single string using a specified separator. This is the inverse operation of split().

Use join() when you need to combine array elements into a delimited string, such as creating CSV output or formatting lists for display.