Touch Simulation with steps

touch_steps.js

function touchSequence(params) {
    var step = 0,
        config = {
            target: params.target || document,
            startX: params.startX || 300,
            startY: params.startY || 300,
            endX: params.endX || 300,
            endY: params.endY || 300,
            steps: params.steps || 4,
            interval: params.interval || 25
        },
        stepX = (config.endX - config.startX) / config.steps,
        touchId = +new Date() + Math.random();


    function doTouch() {

        var evt = document.createEvent('TouchEvent'),
            type =  (step === 0) ? 'touchstart' :
                    (step === config.steps) ? 'touchend' :
                    'touchmove',

            curX = config.startX + stepX * step,

            touch = document.createTouch(window, config.target, touchId, curX, config.startY, curX, config.startY),
            touchList = document.createTouchList(touch);

        if (type === 'touchend') {
            touchList = [];
        }
        evt.initTouchEvent(type, true, true, window, 0,
            curX, params.startY, curX, params.startY,
            false, false, false, false,
            touchList, touchList, touchList,
            1, 0);
        config.target.dispatchEvent(evt);
        if (step !== config.steps) {
            step++;
            setTimeout(doTouch, config.interval);
        }
    }
    doTouch();
}