Run results for: 6 properties - style.setProperty vs style.cssText vs style vs Object.assign vs setAttribute

Test name	Executions per second
✓ setAttribute	319 Ops/sec
style.cssText	36 Ops/sec
style	34 Ops/sec
Object.assign	12 Ops/sec
style.setProperty	11 Ops/sec

style.setProperty

let i = 0;

while (i < 10000) {
  el.style.setProperty("color","red");
  el.style.setProperty("border","1vmin solid red");
  el.style.setProperty("padding","0.5vmin");
  el.style.setProperty("background-color","black");
  el.style.setProperty("height","1vh");
  el.style.setProperty("width","1vw");
  i++;
}

style.cssText

let i = 0;

while (i < 10000) {
  el.style.cssText = "color:red;border:1vmin solid red;padding:0.5vmin;background-color:black;height:1vh;width:1vw;";
  i++;
}

style

let i = 0;

while (i < 10000) {
  el.style = "color:red;border:1vmin solid red;padding:0.5vmin;background-color:black;height:1vh;width:1vw;";
  i++;
}

Object.assign

let style = {
  height: '1vh',
  width: '1vw',
  color: 'red',
  border: '1vmin solid red',
  backgroundColor: 'black',
  padding: '0.5vmin'
};
let i = 0;

while (i < 10000) {
  Object.assign(el.style, style);
  i++;
}

setAttribute

let i = 0;

while (i < 10000) {
  el.setAttribute('style',"color:red;border:1vmin solid red;padding:0.5vmin;background-color:black;height:1vh;width:1vw;");
  i++;
}