indexOf & lastIndexOf function to get the location of string in JavaScript

<script type="text/javascript">
var my_str="www.plus2net.com"
document.write(my_str.indexOf("plus"))
</script>

The above code will return 4

We can find out the location of a particular string inside the main string by using indexOf function.

The first character of the main string is considered as 0 location.

We will get the position of first occurrence of the matching string.

document.write(my_str.indexOf(".")// Output is 3)

lastIndexOf

This method returns us the last occurrence of the string from the left and the location ( or position ) is given from starting ( left ) side.

Here is the code.

var my_str="Welcome to www.plus2net.com"
document.write(my_str.lastIndexOf("l"))

Output of above code is 16 as l position is counted up to the last occurrence.
JavaScript String Reference IndexOf is used to get domain name userid from email address

Subscribe to our YouTube Channel here

indexOf & lastIndexOf to get location of a string

lastIndexOf