Node.js indexOf() function
Last Updated :
30 Mar, 2023
Improve
The indexOf() function is a string function from Node.js which is used to find a string with another string.
Syntax:
str1.indexOf( str2 )
Parameter: This function uses two parameters as mentioned above and described below:
- str1: It holds the string content where another string is to be searched.
- str2: It holds the search string.
Return Value: The function returns the index of the passed parameter. The below programs demonstrate the working of the indexOf() function:
Example 1:
function findIndex(str) {
let index = str.indexOf("awesome");
console.log(index);
}
const str = "gfg is awesome";
findIndex(str);
Output:
7
Example 2:
function findIndex(str1, str2) {
let index = str1.indexOf(str2);
console.log(index);
}
const str1 = "Welcome to GeeksforGeeks";
const str2 = "to"
findIndex(str1, str2);
Output:
8
