jQuery UI Spinner isValid() Method

Last Updated : 24 May, 2022

jQuery UI consists of GUI widgets, visual effects, and themes implemented using HTML, CSS, and jQuery. jQuery UI is great for building UI interfaces for the webpages. jQuery UI spinner widget helps us to increment and decrement values of an input element using up and down arrows.

In this article, we will see how to use the isValid() method in the jQuery UI spinner. This method returns whether the Spinner’s value is valid given its min, max, and step.

Syntax:

var isValid = $( ".selector" ).spinner( "isValid" );

Parameters: This method does not accept any parameters.

Return Value: This method returns the spinner instance object.

CDN Link: First, add jQuery UI scripts needed for your project.

<link rel=”stylesheet” href=”//code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css”>
<script src=”//code.jquery.com/jquery-1.12.4.js”></script>
<script src=”//code.jquery.com/ui/1.12.1/jquery-ui.js”></script>

Example: This example describes the jQuery UI Spinner isValid() method.

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="utf-8" /> 
    <title> jQuery UI Spinner isValid() Method </title> 
      
    <link rel="stylesheet" href= 
"//code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css"> 
  
    <script src= 
"//code.jquery.com/jquery-1.12.4.js"> 
   </script> 
    <script src= 
 "//code.jquery.com/ui/1.12.1/jquery-ui.js"> 
    </script> 
  
    <style> 
        h1 { 
            color: green; 
        } 
  
        #divID { 
            width: 600px; 
        } 
    </style> 
</head> 
  
<body> 
    <center> 
        <h1>GeeksforGeeks</h1> 
  
        <h2>jQuery UI Spinner isValid() Method</h2> 
  
        <input id="divID"> 
        <br><br> 
  
        <input type="button" id="btn" 
               value="Check Spinner is Valid" 
               style="padding: 5px 15px;"> 
    </center> 
  
    <script> 
        $(function () { 
            $("#divID").spinner(); 
  
            $("#btn").on('click', function() { 
                var isValid = $("#divID").spinner("isValid"); 
                alert("Spiner Value: " + isValid); 
            }); 
        }); 
    </script> 
</body> 
</html>