How does autocomplete work for finance.yahoo.com?
For this site, [finance.yahoo.com][1] -> "Enter Symbol" box near top left, I'd like to look at the JavaScript code that handles keyboard input event and shows autocomplete list. I've tried to use Google Chrome's Developer tool to set up break points and step thru. But I've not been able to narrow down the business-logic code. In particular, I'd like to find out where in the HTML page, the handler is attached; then following that, identify the code that sends request to the server for the suggested results. 

Viewing cached result: If I re-enter the same letter in the box, the autocomplete list is obtained locally. How do I identify where the local data comes from? And how do I view it?

Thank you in advance for your help.
How does autocomplete work for finance.yahoo.com?
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For this site, [finance.yahoo.com][1] -> "Enter Symbol" box near top left, I'd like to look at the JavaScript code that handles keyboard input event and shows autocomplete list. I've tried to use Google Chrome's Developer tool to set up break points and step thru. But I've not been able to narrow down the business-logic code. In particular, I'd like to find out where in the HTML page, the handler is attached; then following that, identify the code that sends request to the server for the suggested results. 

Viewing cached result: If I re-enter the same letter in the box, the autocomplete list is obtained locally. How do I identify where the local data comes from? And how do I view it?

Thank you in advance for your help.