jQWidgets jqxKnob val() Method
jQWidgets is a JavaScript framework for making web-based applications for PC and mobile devices. It is a very powerful, optimized, platform-independent, and widely supported framework. The jqxKnob is used for representing a jQuery plugin having a round shape and displaying a draggable indicator within a range of the specified values. This API can also be used in a table or matrix for showing the relative value of a field in a range of values in the specified data region.
The val() method is used for setting or getting a value for the specified jqxKnob.
Syntax:
-
For getting the value:
var value = $('#jqxKnob').val(); -
For setting the value:
$('#jqxKnob').val(50);
Parameters: This method accepts a single parameter that is illustrated below:
- value: This is the specified new value that is going to be set.
Return Values: This method returns the new value.
Linked Files: Download jQWidgets from the given link. In the HTML file, locate the script files in the downloaded folder.
<link rel=”stylesheet” href=”jqwidgets/styles/jqx.base.css” type=”text/css” />
<script type=”text/javascript” src=”scripts/jquery.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxbuttons.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdraw.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxknob.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxnumberinput.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqx-all.js”></script>
Example: The below example illustrates the jqxKnob val() method in jQWidgets.
HTML
<!DOCTYPE html> <html lang="en"> <head> <link rel="stylesheet" href="jqwidgets/styles/jqx.base.css" type="text/css"/> <script type="text/javascript" src="scripts/jquery.js"> </script> <script type="text/javascript" src="jqwidgets/jqxcore.js"> </script> <script type="text/javascript" src="jqwidgets/jqxbuttons.js"> </script> <script type="text/javascript" src="jqwidgets/jqxdraw.js"> </script> <script type="text/javascript" src="jqwidgets/jqxknob.js"> </script> <script type="text/javascript" src="jqwidgets/jqxnumberinput.js"> </script> <script type="text/javascript" src="jqwidgets/jqx-all.js"> </script> </head> <body> <center> <h1 style="color:green;"> GeeksforGeeks </h1> <h3> jQWidgets jqxKnob val() Method </h3> <div id='jqx_Knob'> </div> <input type="button" style="margin: 65px;" id="button_for_val" value="Set value 20 to the above jqxKnob"/> <div id="log"></div> <script type="text/javascript"> $(document).ready(function () { $('#jqx_Knob').jqxKnob({ value: 5, min: 0, max: 50, width: 300, startAngle: 0, endAngle: 360, snapToStep: true, marks: { colorRemaining: { color: 'red' }, colorProgress: { color: 'green' }, offset: '70%', thickness: 5, size: '4%' }, labels: { offset: '85%', step: 5 }, progressBar: { style: { fill: 'yellow', stroke: 'black' }, size: '8%', offset: '61%', background: { fill: 'black' } }, pointer: { type: 'arrow', style: { fill: 'green' }, size: '68%', offset: '29%', thickness: 15 } }); $("#button_for_val").jqxButton({ width: 350, theme: 'energyblue' }); $('#button_for_val').jqxButton(). click(function () { $('#jqx_Knob').jqxKnob('val', 20); }) }); </script> </center> </body> </html> |
Output:
Reference: https://www.jqwidgets.com/jquery-widgets-documentation/documentation/jqxknob/jquery-knob-api.htm
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