Today’s Web browsers not only function as a rich user interface with responsive and eye-pleasing graphical controls, but serve as a data visualization ... in pure JavaScript and HTML.” ...

jsFiddle is the perfect solution; it provides a custom environment (based on user selections) to test (or fiddle with) your JavaScript, HTML, and CSS code right inside your browser. A quick tour ...

Creating visualizations is getting easier thanks to ... Students will be expected to self-study to learn JavaScript and other basic web technologies (HTML, CSS) if they are not familiar with them.

The new release brings improvements to JavaScript heap profiles, CSS code formatting ... the semantic highlighting of JavaScript source in HTML files with what is seen in normal .jscode files.