Google Visualization highlight single grid line
问题 how can I highlight a single grid line? I would like to set an optical temperature limit at 35 ° C. Thanks! I have now added it to my code, but it does not work .... do you see my mistake? Or did I not understand something in your explanation? Here is the edited version : //Google Chart google.charts.load('current', { callback: function drawChart(peanut) { const div = document.createElement('div'); div.id = peanut.color + peanut.mac.split(':').join(''); $('#charts').appendChild(div); peanut