Indexof JavaScript Array

In this article, we will learn about indexof the javascript array.

IndexOf() Method:

It returns an index of the first occurrence of a given search element.

Syntax:

indexOf(searchElement:*):number

Where:

• searchElement: indicates element to be searched
• number : indicates an index of the first occurrence of the element to be searched

Ex:

var studNames = ["Ram", "Ravi", "Raju", "Raghu", "Gopal"];
document.write(studNames.indexOf("Ravi")); //1

1. In this first line above code, we have created an array variable “studNames” and assigned five string values.
2. Then we find the index value of a particular string in “studNames”, we need to use the indexOf() operation. The index of the value to be found must be given in the function