Cost per click (CPC)

<div class="board"><div class="top">BID <strong id="bid">$1.20</strong></div><input id="range" aria-label="Bid" type="range" min="60" max="200" value="120"><div class="dots" id="dots"></div><div class="foot"><span id="wins">4 CLICKS</span><div class="track"><i id="cost"></i></div><b id="spent">$4.80</b></div></div>

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const range=document.querySelector('#range'),dots=document.querySelector('#dots');dots.innerHTML=Array.from({length:8},()=>'<i></i>').join('');const thresholds=[60,75,90,105,120,140,165,190];function draw(){const bid=Number(range.value),wins=thresholds.filter(x=>x<=bid).length;document.querySelector('#bid').textContent='$'+(bid/100).toFixed(2);document.querySelector('#wins').textContent=wins+' CLICKS';document.querySelector('#spent').textContent='$'+(wins*bid/100).toFixed(2);document.querySelector('#cost').style.width=(wins*bid/16)+'%';[...dots.children].forEach((d,i)=>d.classList.toggle('win',i<wins))}range.addEventListener('input',()=>{clearInterval(timer);draw()});let direction=20;const timer=setInterval(()=>{let n=Number(range.value)+direction;if(n>=190||n<=70)direction*=-1;range.value=String(n);draw()},650);draw();