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Fine tuning of labels
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<iframe 
    src="https://www.jsxgraph.org/share/iframe/fine-tuning-of-labels" 
    style="border: 1px solid black; overflow: hidden; width: 550px; aspect-ratio: 55 / 65;" 
    name="JSXGraph example: Fine tuning of labels" 
    allowfullscreen
></iframe>
This code has to 
<style>
.myLabel {
    border: 1px solid black;
    border-radius: 3px;
    padding: 2px;
}
</style>

<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 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, -1],
        axis: true
    });
    
    var p1 = board.create('point', [-2, 3], {
        size: 20,
        name: 'A',
        fillColor: 'none',
        label: {
            offset: [0, 0],
            anchorX: 'middle',
            anchorY: 'middle',
        }
    });
    
    var p2 = board.create('point', [2, 3], {
        size: 5,
        name: 'B',
        label: {
            offset: [0, 10],
            anchorX: 'middle',
            anchorY: 'bottom',
            cssClass: 'myLabel',
            highlightCssClass: 'myLabel'
        }
    });
 </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, -1],
    axis: true
});

var p1 = board.create('point', [-2, 3], {
    size: 20,
    name: 'A',
    fillColor: 'none',
    label: {
        offset: [0, 0],
        anchorX: 'middle',
        anchorY: 'middle',
    }
});

var p2 = board.create('point', [2, 3], {
    size: 5,
    name: 'B',
    label: {
        offset: [0, 10],
        anchorX: 'middle',
        anchorY: 'bottom',
        cssClass: 'myLabel',
        highlightCssClass: 'myLabel'
    }
});
The labels are centered of labels and get custom CSS styles / class.
<style>
.myLabel {
    border: 1px solid black;
    border-radius: 3px;
    padding: 2px;
}
</style>
// Define the id of your board in BOARDID

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

var p1 = board.create('point', [-2, 3], {
    size: 20,
    name: 'A',
    fillColor: 'none',
    label: {
        offset: [0, 0],
        anchorX: 'middle',
        anchorY: 'middle',
    }
});

var p2 = board.create('point', [2, 3], {
    size: 5,
    name: 'B',
    label: {
        offset: [0, 10],
        anchorX: 'middle',
        anchorY: 'bottom',
        cssClass: 'myLabel',
        highlightCssClass: 'myLabel'
    }
});

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.