jQuery to check whether value exists in array or not?

Introduction: In this article I am going to explain how to find whether specified value/item exists in array or not using jQuery’s $.inArray() or javascript’s indexOf() methods. 

jQuery to check whether value exists in array or not?

Description: The $.inArray() method is similar to JavaScript's native .indexOf() method in that it returns -1 when it doesn't find a match and returns the index of the element if found.

Implementation: Let’s understand by an example.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
        function CheckItem() {          
            var items = ['chair', 'table', 'carpet', 'fan', 'cooler', 'almirah', 'oven', 'tv'];
            var item = $('#txtItem').val();
if ($.inArray(item, items) != -1) // or if (items.indexOf(item) != -1)
                $('#spnMessage').html(item + ' found');
            else {               
                $('#spnMessage').html(item + ' not found');
    <input type="text" id="txtItem" />
       <button type="button" onclick="CheckItem();">Submit</button><br /><br />
 <span id="spnMessage"></span>


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