Javascript join () method

Document directory

• Syntax
• Return Value
• Example 1
• Example 2

Definition and usage

The join () method is used to put all elements in the array into a string.

Elements are separated by the specified delimiter.

Syntax

arrayObject.join(separator)

Parameters	Description
Separator	Optional. Specifies the delimiter to use. If this parameter is omitted, a comma is used as the separator.

Return Value

Returns a string. This string is used to convert each element of arrayobject into a string, connect these strings, and insert them between two elements.Separator
String.

Example 1

In this example, we will create an array and put all its elements into a string:

<script type="text/javascript">

var arr = new Array(3)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"

document.write(arr.join())

</script>

Output:

George,John,Thomas

Example 2

In this example, the elements in the array are separated using delimiters:

<script type="text/javascript">

var arr = new Array(3)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"

document.write(arr.join("."))

</script>

Output:

George.John.Thomas