D3.js is a popular JavaScript library for creating interactive data visualizations on the web, commonly used by Data Scientists and Analysts.Several courses are available in 2025 to learn D3.js, teaching how to create interactive visualizations and charts by binding data to web elements.These courses cover basics of data visualization with D3, including building various types of charts like Bar charts, Pie charts, and Mind maps.Learning D3.js can be valuable for professionals needing to present data insights effectively to stakeholders and business audiences.