Point
From JSXGraph Wiki
This example shows how to construct a simple, draggable point <html> <script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script> <script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/loadjsxgraphXML.js"></script> <script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<script type="text/javascript">
var board = JXG.JSXGraph.initBoard('jxgbox', {originX: 250, originY: 250, unitX: 50, unitY: 50});
var p = board.createElement('point',[1,1]);
</script>
