BetterYTM-Mirror/dev/numKeysJumpTo.js

(() => {
	const timeSteps = 9; // excluding 0
    function getX(timeKey, maxWidth) {
        if(timeKey >= timeSteps)
            return maxWidth;
        return Math.floor(maxWidth / timeSteps) * timeKey;
    }

	const elem = document.querySelector("#sliderBar");
	const rect = elem.getBoundingClientRect();
	const x = getX(1, rect.width);
	const y = (rect.top + rect.bottom) / 2;

	const evt = new MouseEvent("mousedown", {
        clientX: x,
		clientY: y,
		target: elem,
        bubbles: true,
        view: window,
	});

    document.body.dispatchEvent(evt);
})();