Interactive JessieScript
From JSXGraph Wiki
Available commands
See our documentation page for a list of commands.
The JavaScript code
var board, construction = [];
board = JXG.JSXGraph.initBoard('box', {grid:true, boundingbox:[-1,6,11,-3], keepaspectratio:true, axis:true});
function construct() {
    var t = document.getElementById('input').value;
    board.suspendUpdate();
    construction.push(board.construct(t));
    board.unsuspendUpdate();
}
function clearAll() {
    JXG.JSXGraph.freeBoard(board);
    board = JXG.JSXGraph.initBoard('box', {grid:true, boundingbox:[-1,6,11,-3], keepaspectratio:true, axis:true});
}
