Cannot sniff dynamically loaded js after page has been loaded for a while

[rip-tyang]

For example:

Github use d3 to show contribution graphs, but d3 is not loaded until user click the Graphs tab.

Before I click the Graphs tab:

After I click the Graphs tab:

Possible solution:

• Sniff the page periodically
• Restart sniffing once the page has new resources loaded.