How to use arr.join() Method In Javascript

This method is used to join the elements of an array into a string. The elements of the string will be separated by a specified separator and its default value is a comma(,).

Syntax:

array.join(separator)

Example: In this case, we use an empty separator i.e. array.join(“”) to join the array elements.

Javascript
let str = ["Welcome", "Geeks", "for", "Geeks"];

console.log("Joined String: " + str.join(""));

Output
Joined String: Welcomew3wiki

How to create a string by joining the elements of an array in JavaScript ?

Given an array containing array elements and here we will join all the array elements to make a single string. To join the array elements we use arr.join() method.

There are two methods by which we can create a string by joining the elements of an array:

Table of Content

  • Using arr.join() Method
  • Using arr.toString() Method
  • Using for loop

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