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Quick SVG

  1. const el = document.body.appendChild(
  2.     document.createElement('div'));
  3. el.innerHTML = `<svg style='overlow:visible'>
  4.   <circle cx="100" cy="20" r="20" fill="red" />
  5.   <rect x="100" y="60" width="20" height="20" fill="blue" />
  6. </svg>`;

Defining SVG like this in a template string is a fast and powerful way to start doing SVG that is controlled or generated by JavaScript. Here is another example:

  1. const scribble = document.body.appendChild(
  2.     document.createElement('div'));
  3. const d = (iter = 30) => {
  4.   // make sure the iter is odd
  5.   if (iter % 2 == 0) iter += 1;
  6.   // random cubic beziƩr
  7.   let path = 'M ';
  8.   for (let i = 0; i < iter; i++) {
  9.     const cmd = i == 1 ? 'C ' : ' '
  10.     path += cmd + Math.random() * 200 + ' ' + Math.random() * 200;
  11.   }
  12.   return path + 'z';
  13. }
  14. scribble.innerHTML = `<svg style='overlow:visible' viewBox="0 0 200 200">
  15.   <path d="${d()}" 
  16.     stroke="#295896" 
  17.     stroke-width="3"
  18.     fill="#ccc" 
  19.     fill-rule="even-odd"
  20.     vector-effect="non-scaling-stroke" />
  21. </svg>
  22. <style>
  23.   svg, div, body, html {
  24.     overflow: visible; 
  25.     height: 100%; 
  26.     width: 100%;
  27.     margin: 0; padding: 0;
  28.   }
  29. </style>
  30. `;

You’ll notice a somewhat hacky style tag as well… this is used to quickly fill the page with the SVG.

snippet.zone ~ 2021-22 /// {s/z}