{"version":"1.0","type":"rich","title":"Practicing Javascript","description":"Three animated SVG shapes practice D3 transitions in a React-free setup. An arc pulses between inner and outer radii, while two diagonal lines stretch and contract in sync, each cycling through uptime, wait, and downtime intervals. The code uses `d3.arc` to compute the arc’s path and chained `transition().duration()` calls with `on('end')` callbacks to loop the animations. A static HTML page loads D3 v5 and runs the script in a 200×200 SVG.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e434242eef4a4da58089e9f99cec880e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}