[Dilettante_Pro]

в консоле пусто. (??)

- ????

<div class="editor">
    <canvas></canvas>
    <a href="" download="my-file-name.png" href="#">
        <button id="download">Скачать</button>
    </a>
</div>
<script>
let canvas = document.querySelector('.editor canvas');
console.log(canvas);
alert(canvas.tagName);
</script>