useful for when you need to get a very large svg and don't want to put it inline because it makes the page load very slow

getSvg.js

const getSvg = async (svgUrl, svgContainer) => {
  
  let request = await fetch(svgUrl)
  let svgText = await request.text()

  const parser = new DOMParser();
  const svgHtml = parser.parseFromString(svgText, "text/html");
  svgContainer.appendChild(svgHtml.body.querySelector('svg'))
}