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How to draw on scroll using JavaScript and SVG?
To draw on scroll using JavaScript and SVG, the code is as follows −
Example
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style> body { height: 2000px; background: #f1f1f1; } svg { position: fixed; top: 15%; width: 400px; height: 210px; margin-left: -50px; } </style> </head> <body> <h1>Scroll Using JavaScript and SVG example</h1> <svg> <path fill="none" stroke="purple" stroke-width="5" id="polygon" d="M 150 350 Q 150 50 250 150 Q 250 550 300 150 Q 350 50 400 300"/> </svg> <script> var polygon = document.getElementById("polygon"); var length = polygon.getTotalLength(); polygon.style.strokeDasharray = length; polygon.style.strokeDashoffset = length; window.addEventListener("scroll", drawPoly); function drawPoly() { var scrollpercent = (document.body.scrollTop + document.documentElement.scrollTop) / (document.documentElement.scrollHeight - document.documentElement.clientHeight); var draw = length * scrollpercent; polygon.style.strokeDashoffset = length - draw; } </script> </body> </html> Output
The above code will produce the following output −
On scrolling to the bottom of the page −
Updated on: 2020-05-08T12:48:13+05:30
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