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Node.js slice() function

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  • Last Updated : 14 Oct, 2021

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


string.slice( start, end )

Parameters: This function uses thress 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 sub-string.
  • end: This parameter holds the ending index od sub-string.

Return type: The function returns the substring.

The program below demonstrates the working of the function:

Program 1:

function findsubstr(str) {
    var index = str.slice(12, 25);
var str = "Welcome to GeeksforGeeks";



Program 2:

function findsubstr(str, start, end) {
    var index = str.slice(start, end);
var str = "Welcome to GeeksforGeeks";
var start = 0;
var end = 6;
findsubstr(str, start, end);


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