Dijkstra shortest path

<div class="v"><header><b>DIJKSTRA</b><span id="state"></span></header><main><div class="route" id="route"></div><div class="dist" id="dist"></div></main><footer>relax neighbors, then settle</footer></div>

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let n=0;const names=["A","B","C","D"],dist=[[0,"∞","∞","∞"],[0,2,5,"∞"],[0,2,3,6],[0,2,3,4]];function draw(){document.getElementById("route").innerHTML=names.map((x,i)=>"<b class=\""+(i===n?"active":i>n?"muted":"")+"\">"+x+"</b>"+(i<3?"<em>→</em>":"")).join("");document.getElementById("dist").textContent=names.map((x,i)=>x+":"+dist[n][i]).join("  ");document.getElementById("state").textContent="settle "+names[n];n=(n+1)%4}draw();setInterval(draw,1000)