3. Web Tracking And Analytics JavaScript offers real-time tracking of page views and heatmaps that tell you how far down people are reading your content.

For example, if a page needs a JavaScript file from your server, browsers may block that request when it comes from other websites. In our case, the other website would be Google’s cache.

A few months back I wrote a simple javascript web page that lets you monitor the response time of URL. It graphs the response times and records timeouts as red dots on the graph. I find it handy ...