VM stack in Chrome

http://stackoverflow.com/questions/17367560/chrome-development-tool-vm-file-from-javascript

it says:

[VM] (scriptId) has no special meaning. It’s a dummy name to help us to distinguish code which are not directly tied to a file name, such as code created using eval and friends.

In the past, all of these scripts were just labelled (program).

If you’re interested, just look up "[VM]"in the source code of Chromium, you will discover that these numbers have no significant meaning outside the developer tools.

https://code.google.com/p/chromium/codesearch#search/&q="[VM]"&sq=package%3Achromium&type=cs

More tricks about javascript debugging could be found here:

https://developer.chrome.com/devtools/docs/javascript-debugging#breakpoints-dynamic-javascript

Test: