{"version":"1.0","type":"rich","title":"Sample problems 2","description":"This example presents four JavaScript practice problems embedded in an HTML page, intended for console-based learning rather than visual output. It demonstrates array searching, substring filtering, set difference, object sorting, and conditional logic using plain JavaScript. The problems work with hardcoded data arrays containing state names, locations, populations, and letter/number values. The code relies on the D3.js v4 library only for page setup, while all problem-solving uses native JavaScript methods like `console.log()`, `filter()`, `sort()`, and `forEach()`. No SVG or canvas rendering occurs, as the output appears solely in the browser’s developer console.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-78ce1b85501471bf6561a9e56f8a51bb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}