Introduction: In this tutorial, I am going to discuss about to check if the value exists in an array or not using jquery. The whole process done under the <script></script> tag. Let's see. Check if the value already exists in array jquery
Steps:
1. Make a function name like valexixts.
2. Declare an array[] of var type.
3. Add Jquery Library CDN link.
Coding Part:
Steps:
1. Make a function name like valexixts.
2. Declare an array[] of var type.
3. Add Jquery Library CDN link.
Coding Part:
<html>
<head>
<title></title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
function valexixts() {
var items = ['bat', 'ball', 'shirt', 'chair', 'fridge', 'tv'];
var item = $('#txtItem').val();
if ($.inArray(item, items) != -1)
{
$('#lblmsg').html(item + ' found');
}
else {
$('#lblmsg').html(item + ' not found');
}
}
</script>
</head>
<body>
<input type="text" id="txtcheck" />
<button type="button" onclick="valexixts();">Check</button><br />
<span id="lblmsg"></span>
</body>
</html>
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