Vector similarity search

<div class="demo"><div class="head"><b>NEAREST NEIGHBOR</b><span id="nearest">nearest A</span></div><div class="stage plot"><div class="dot" style="left:20%;top:28%">A</div><div class="dot" style="left:74%;top:20%">B</div><div class="dot" style="left:60%;top:72%">C</div><div class="query" id="query">Q</div></div><div class="foot"><span id="distance">query near A</span><span>distance ranking</span></div></div>

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let n=0;const p=[[27,34,0,'A'],[66,28,1,'B'],[58,63,2,'C']];function tick(){let [x,y,k,label]=p[n];let q=document.getElementById('query');q.style.left=x+'%';q.style.top=y+'%';document.querySelectorAll('.dot').forEach((e,i)=>e.classList.toggle('on',i===k));document.getElementById('nearest').textContent='nearest '+label;document.getElementById('distance').textContent='query near '+label;n=(n+1)%3}tick();const t=setInterval(tick,1300);document.querySelector('.demo').onclick=()=>{clearInterval(t);tick()}