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 ...

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.

We’ve seen numerous server-side approaches and they always seem to obfuscate the powerful trio of HTML, JavaScript, and CSS, which continues to win out in the end. Maybe this time will be different.

As such, a modern webpage is typically made up of three separate entities: a cascading style sheet, a JavaScript file and the HTML file itself. The cascading nature of CSS files is attributed to the ...