This vector enumerates HTML attributes and discovers if they have a corresponding DOM property.
<div id=x $[data1]=x></div>if(document.getElementById('x')['$[data1]'])log('$[data1]')<div id=x autocapitalize=x></div><div id=x autofocus=x></div><div id=x hidden=x></div><div id=x id=x></div><div id=x inert=x></div><div id=x lang=x></div><div id=x nonce=x></div><div id=x part=x></div><div id=x popover=x></div><div id=x slot=x></div><div id=x style=x></div><div id=x title=x></div><div id=x translate=x></div><div id=x onblur=x></div><div id=x onerror=x></div><div id=x onfocus=x></div><div id=x onload=x></div><div id=x onresize=x></div><div id=x align=x></div><div id=x autocorrect=x></div>