<input id="i"> <button onclick="l.textContent='Now do '+i.value">Do This</button> <button onclick="l.textContent='Do nothing'">Do Nothing</button> <label id="l"></label>
data:text/html;,<input id=i><button onclick="l.textContent='Now do '+i.value">Do</button><button onclick="l.textContent='Do nothing'">Nope</button><label id=l>
