Dynamically “unload” a Processing JS sketch from canvas

Question

I\'m using some javascript to allow users to dynamically load a sketch on click to a canvas element using:

Processing.loadSketchFromSources(\'canvas_i

Answer 1

As of processing.js 1.4.8, Andrew's accepted answer (and the other answers I've found in here) do not seem to work anymore.

This is what worked for me:

    var pjs = Processing.getInstanceById('pjs');
    if (typeof pjs !== "undefined") {
      pjs.exit();
    }

    var canvas = document.getElementById('pjs')
    new Processing(canvas, scriptText);

where pjs is the id of the canvas element where the scrips is being run.