Антон

<canvas id="canvas" width="600" height="600" style="border:solid black 1px;">
	Ваш браузер не поддерживает элемент canvas.
</canvas>
<br>
<button onclick="startup()">Инициализировать</button>
<br>
Log: <pre id="log" style="border: 1px solid #ccc;"></pre>

function startup() {
	var el = document.getElementsByTagName("canvas")[0];
	el.addEventListener("touchstart", handleStart, false);
	el.addEventListener("touchend", handleEnd, false);
	el.addEventListener("touchcancel", handleCancel, false);
	el.addEventListener("touchmove", handleMove, false);
	log("initialized.");
}

var allFieldsets = document.querySelectorAll('fieldset')[0]
// <fieldset class="form__element">…</fieldset>

var allFieldsets = document.querySelectorAll('fieldset')
// NodeList [<fieldset class="form__element">]