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Logging of user activity
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This code has to 
<button onclick="showUserLog();">Show user log</button>

<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>


<textarea id="userLog" rows="10" cols="40"></textarea>
<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 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: [-5, 5, 5, -5],
        axis: false,
        logging: {enabled: true},
        showNavigation: false
    });
    
    var A = board.create('point', [-4, 0], { name: 'A' });
    var B = board.create('point', [1, 2], { name: 'B' });
    
    var showUserLog = function() {
        var txt = '';
        
        for (let i = 0; i < board.userLog.length; i++) {
            txt += JSON.stringify(board.userLog[i]) + '\n';
        }
        document.getElementById('userLog').value = txt;
    };
 </script> 
/*
This example is licensed under a 
Creative Commons Attribution 4.0 International License.
https://creativecommons.org/licenses/by/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: [-5, 5, 5, -5],
    axis: false,
    logging: {enabled: true},
    showNavigation: false
});

var A = board.create('point', [-4, 0], { name: 'A' });
var B = board.create('point', [1, 2], { name: 'B' });

var showUserLog = function() {
    var txt = '';
    
    for (let i = 0; i < board.userLog.length; i++) {
        txt += JSON.stringify(board.userLog[i]) + '\n';
    }
    document.getElementById('userLog').value = txt;
};

Logging of user activity

Technical
If the board attribute `logging` is enabled, user activity is logged in the board object `userLog`. Each entry is a JavaScript object containing some data about the user activity. Drag the points 'A' and 'B' and then click on "Show user log".
<button onclick="showUserLog();">Show user log</button>
// Define the id of your board in BOARDID

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

var A = board.create('point', [-4, 0], { name: 'A' });
var B = board.create('point', [1, 2], { name: 'B' });

var showUserLog = function() {
    var txt = '';
    
    for (let i = 0; i < board.userLog.length; i++) {
        txt += JSON.stringify(board.userLog[i]) + '\n';
    }
    document.getElementById('userLog').value = txt;
};
<textarea id="userLog" rows="10" cols="40"></textarea>

license

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