What is Node.js slice() function?

In this article, we will learn Node.js slice() function,This free Node.js tutorial for complete beginners will help you learn Node.js from scratch.

Node.js slice() function

Q: How to use Node.js slice() function in Node.js?

The slice() function is a string function of Node

Node.js split() function

The slice() function is a string function of Node.js which is used to extract sub-string from a string.

Syntax:

string.slice( start, end )

Parameters: This function uses three parameters as mentioned above and described below:

string: It holds the string content. The substring is extracted from this string.
start: This parameter holds the starting index of the sub-string.
end: This parameter holds the ending index of the sub-string.

Return type: The function returns the substring.

The program below demonstrates the working of the function:

Program 1:

javascript

function findsubstr(str) {
    const index = str.slice(12, 25);
    console.log(index);
}
 
const str = "Welcome to w3wiki";
 
findsubstr(str);

Output:

w3wiki

Program 2:

javascript

function findsubstr(str, start, end) {
    const index = str.slice(start, end);
    console.log(index);
}
const str = "Welcome to w3wiki";
 
const start = 0;
const end = 6;
 
findsubstr(str, start, end);

Output:

Welcome

Tags:

#NodeJS-function #Node.js #Web Technologies

Node.js split() function