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Radio buttons
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<iframe 
    src="http://jsxgraph.uni-bayreuth.de/share/iframe/radio-buttons" 
    style="border: 1px solid black; overflow: hidden; width: 550px; aspect-ratio: 55 / 65;" 
    name="JSXGraph example: Radio buttons" 
    allowfullscreen
></iframe>
This code has to 
<div id="board-0-wrapper" class="jxgbox-wrapper " style="width: 100%; ">
   <div id="board-0" class="jxgbox" style="aspect-ratio: 1 / 1; width: 100%;" data-ar="1 / 1"></div>
</div>

<script type = "text/javascript"> 
    /*
    This example is licensed under a 
    Creative Commons Attribution ShareAlike 4.0 International License.
    https://creativecommons.org/licenses/by-sa/4.0/
    
    Please note you have to mention 
    The Center of Mobile Learning with Digital Technology
    in the credits.
    */
    
    const BOARDID = 'board-0';

    const board = JXG.JSXGraph.initBoard(BOARDID, {
        boundingbox: [-1, 5, 5, -1],
        axis: true
    });
    
    var radio = board.create('text', [2, 3, `
    <input type="radio" name="myradio" value="1" onchange="change(this);">1<br/>
    <input type="radio" name="myradio" value="2" onchange="change(this);">2<br/>
    <input type="radio" name="myradio" value="3" onchange="change(this);">3<br/>
    `], {fixed: true, frozen: true});
    
    // Event handler
    window.change = function(src) {
        alert(src.value);
    }
 </script> 
/*
This example is licensed under a 
Creative Commons Attribution ShareAlike 4.0 International License.
https://creativecommons.org/licenses/by-sa/4.0/

Please note you have to mention 
The Center of Mobile Learning with Digital Technology
in the credits.
*/

const BOARDID = 'your_div_id'; // Insert your id here!

const board = JXG.JSXGraph.initBoard(BOARDID, {
    boundingbox: [-1, 5, 5, -1],
    axis: true
});

var radio = board.create('text', [2, 3, `
<input type="radio" name="myradio" value="1" onchange="change(this);">1<br/>
<input type="radio" name="myradio" value="2" onchange="change(this);">2<br/>
<input type="radio" name="myradio" value="3" onchange="change(this);">3<br/>
`], {fixed: true, frozen: true});

// Event handler
window.change = function(src) {
    alert(src.value);
}
<jsxgraph width="100%" aspect-ratio="1 / 1" title="Radio buttons" description="This construction was copied from JSXGraph examples database: BTW HERE SHOULD BE A GENERATED LINKuseGlobalJS="false">
   /*
   This example is licensed under a 
   Creative Commons Attribution ShareAlike 4.0 International License.
   https://creativecommons.org/licenses/by-sa/4.0/
   
   Please note you have to mention 
   The Center of Mobile Learning with Digital Technology
   in the credits.
   */
   
   const board = JXG.JSXGraph.initBoard(BOARDID, {
       boundingbox: [-1, 5, 5, -1],
       axis: true
   });
   
   var radio = board.create('text', [2, 3, `
   <input type="radio" name="myradio" value="1" onchange="change(this);">1<br/>
   <input type="radio" name="myradio" value="2" onchange="change(this);">2<br/>
   <input type="radio" name="myradio" value="3" onchange="change(this);">3<br/>
   `], {fixed: true, frozen: true});
   
   // Event handler
   window.change = function(src) {
       alert(src.value);
   }
</jsxgraph>
HTML radio buttons - as any other HTML code - can be integrated easily into JSXGraph text elements. JSXGraph text elements with the default attribute `display:'html'` essentially supply an HTML `
` element which can contain nearly any HTML code. To see the full source code, copy the content with the copy icon and paste it into your text editor.
// Define the id of your board in BOARDID

const board = JXG.JSXGraph.initBoard(BOARDID, {
    boundingbox: [-1, 5, 5, -1],
    axis: true
});

var radio = board.create('text', [2, 3, `
1

2

3

`], {fixed: true, frozen: true});

// Event handler
window.change = function(src) {
    alert(src.value);
}

license

This example is licensed under a Creative Commons Attribution ShareAlike 4.0 International License.
Please note you have to mention The Center of Mobile Learning with Digital Technology in the credits.