Node.js join() function

Last Updated : 30 Mar, 2023

join() is an array function from Node.js that is used to return a string from the array.

Syntax:

array_name.join(parameter)

Parameter: This function takes a single parameter as per which the join operation has to be performed.

Return type: The function returns the string.

The program below demonstrates the working of the function:

Example 1:

javascript

function joinDemo() {     const str = arr.join("*");     console.log(str); } const arr = [17, 55, 87, 49, 78]; joinDemo();

Output:

17*55*87*49*78

Example 2:

javascript

function joinDemo() {     const str = arr.join("");     const str1 = arr.join("$");     console.log(str);     console.log(str1); } const arr = ['C', 'Java', 'Python']; joinDemo();

Output:

CJavaPython C$Java$Python

Node.js MySQL LENGTH() Function

Twinkl Bajaj

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