JavaScript Boolean Object JavaScript Array Object

JavaScript array join() method

The JavaScript array join() method connects all elements in an array into a single string and returns the string.

The returned elements will be separated by the specified separator. The default separator is a comma (,).

Syntax:

array.join(separator)

Example

var alpha = ['A''B''C''D''E'];
var str = alpha.join();

Test and see‹/›

Browser compatibility

The numbers in the table specify the first browser version that fully supports the join() method:

Method
join()	1	1	Is	Is	5.5

Parameter Value

Parameter	Description
separator	Specify a string to separate each element of the array. If omitted, array elements are separated by commas

Technical Details

Return Value:	A string containing all array elements
JavaScript Version:	ECMAScript 1

More Examples

The following example creates an array containing three elements and then concatenates it five times:

Example

var fruits = ["Banana", "Apple", "Mango"];
fruits.join("");　　//　BananaAppleMango
fruits.join(" ");　//　Banana Apple Mango
fruits.join("　+　);　　　//　Banana　+　Apple　+　Mango
fruits.join("　/　);　　　//　Banana　/　Apple　/　Mango
fruits.join(" © ");　　//　Banana © Apple © Mango

Test and see‹/›

　JavaScript Array Object