Creative fatigue

<div class="chart"><div class="title">CREATIVE RESPONSE <b id="pct">3.2% CTR</b></div><svg viewBox="0 0 400 150" preserveAspectRatio="none" aria-label="CTR trend"><path d="M10 125H390" class="axis"/><path id="line" class="line" d=""/><circle id="dot" r="6"/></svg><div class="bottom"><span>REPEAT EXPOSURE →</span><button id="refresh">NEW CREATIVE</button></div></div>

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const points=[12,25,42,63,85,105],fresh=[12,24,38,54,74,91];let step=0,renewed=false;function draw(){const values=renewed?fresh:points;const coords=values.slice(0,step+1).map((y,i)=>[20+i*70,y]);document.querySelector('#line').setAttribute('d',coords.map(([x,y],i)=>(i?'L':'M')+x+' '+y).join(' '));const [x,y]=coords.at(-1);document.querySelector('#dot').setAttribute('cx',x);document.querySelector('#dot').setAttribute('cy',y);document.querySelector('#pct').textContent=(renewed?3.5-step*.25:3.2-step*.48).toFixed(1)+'% CTR';step++;if(step>=6){step=0;renewed=!renewed}}document.querySelector('#refresh').addEventListener('click',()=>{step=0;renewed=true;draw()});draw();setInterval(draw,750);