Whenever a search is made for the particular value for determining whether it is present in an array of not then the element may be either not found or found at the index positive values and numbers from the from the index or at the length of the array plus from index long from the negative values or numbers from the index specified in frmIndex. By default, the index has zero (0) value.

This is the optional parameter and not require one.

It determines the starting point in the array for searching for its containment.

FrmIndex: This is the index value from which you want to search for the element in the array.

When a string or character comparison is to be made then the includes() method considers the specified value to search value in case-sensitive format for matching and determining its containment. The value of the element should match the value to search.

ValueToSearch: This is the value that you want to search in the sample array to determine its presence or absence in the array.

sampleArray: It can be an array variable containing any number of elements in which you want to determine whether it contains the particular value or not.

The above syntax of includes() method is explained in detail below:

Syntax of JavaScript Array Contain are given below: In this article, we will learn about the determination of whether a javascript array contains a particular element or not using () or simply put includes() method for arrays, its syntax, working and some examples that will help us clear the concept of working of this method.

In case if the array contains the specified valued element then it returns true otherwise false. () is the method provided in javascript that helps us to determine whether any given array contains the specified value element considering all its entries and elements and this method returns a boolean value either true or false depending on the appropriate result and scenario. To know whether an array contains a particular element or not, we use includes a method in javascript. An array in javascript is a collection of similar data typed objects.

Javascript array includes