Share JSXGraph: example "Cardinal splines"

<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 4.0 International License.
    https://creativecommons.org/licenses/by/4.0/
    
    Please note that you have to mention 
    The Center of Mobile Learning with Digital Technology
    in the credits.
    */
    
    const BOARDID = 'board-0';

    var board = JXG.JSXGraph.initBoard(BOARDID, {
        boundingbox: [-5, 5, 5, -5],
        axis: true
    });
    
    var p = [],
        c, i, tau;
    
    // Create 5 random points
    for (i = 0; i < 5; i++) {
        p.push(board.create('point', [(Math.random() - 0.5) * 7, (Math.random() - 0.5) * 7]));
    }
    
    // Slider to adjust the tension tau
    tau = board.create('slider', [
        [0.5, 4],
        [3.5, 4],
        [0.001, 0.5, 1]
    ], {
        name: 'tau'
    });
    
    c = board.create('curve', JXG.Math.Numerics.CardinalSpline(p, () => tau.Value()), {
        strokeWidth: 3
    });
 </script> 

<jsxgraph width="100%" aspect-ratio="1 / 1" title="Cardinal splines" description="This construction was copied from JSXGraph examples database: https://jsxgraph.uni-bayreuth.de/share/" useGlobalJS="false">
   /*
   This example is licensed under a 
   Creative Commons Attribution 4.0 International License.
   https://creativecommons.org/licenses/by/4.0/
   
   Please note that you have to mention 
   The Center of Mobile Learning with Digital Technology
   in the credits.
   */
   
   var board = JXG.JSXGraph.initBoard(BOARDID, {
       boundingbox: [-5, 5, 5, -5],
       axis: true
   });
   
   var p = [],
       c, i, tau;
   
   // Create 5 random points
   for (i = 0; i < 5; i++) {
       p.push(board.create('point', [(Math.random() - 0.5) * 7, (Math.random() - 0.5) * 7]));
   }
   
   // Slider to adjust the tension tau
   tau = board.create('slider', [
       [0.5, 4],
       [3.5, 4],
       [0.001, 0.5, 1]
   ], {
       name: 'tau'
   });
   
   c = board.create('curve', JXG.Math.Numerics.CardinalSpline(p, () => tau.Value()), {
       strokeWidth: 3
   });
</jsxgraph>