ES6 - Array Method join()

join() method joins all the elements of an array into a string.

Syntax

array.join(separator);   

Parameters

• separator − Specifies a string to separate each element of the array. If omitted, the array elements are separated with a comma.

Return Value

Returns a string after joining all the array elements.

Example

var arr = new Array("First","Second","Third"); 
var str = arr.join();console.log("str : " + str );  
var str = arr.join(", "); 
console.log("str : " + str );  

var str = arr.join(" + "); 
console.log("str : " + str );  

Output

str : First,Second,Third 
str : First, Second, Third 
str : First + Second + Third