Node.js indexOf() function
Last Updated :
30 Mar, 2023
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:
javascript
function findIndex(str) {
let index = str.indexOf( "awesome" );
console.log(index);
}
const str = "gfg is awesome" ;
findIndex(str);
|
Output:
7
Example 2:
javascript
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
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