node.js parse a page and catch external frontend js errors

Question

是否可以解析具有某些js错误（例如，“未定义$”）的外部页面http://example.com ，捕获这些错误并通过console.log（）打印它们？

Answer 1

Yes, it is possible. Basically you need to download a page and render it in a headless browser such as PhantomJS .

Someone has done this already: http://npmjs.com/package/phantom-check

$ phantom-check http://example.com
Phantom is checking http://example.com

[info] [phantom] Starting...
[info] [phantom] Running suite: 2 steps
[debug] [phantom] opening url: http://example.com/, HTTP GET
[debug] [phantom] Navigation requested: url=http://example.com/, type=Other, willNavigate=true, isMainFrame=true
[debug] [phantom] url changed to "http://example.com/"
[debug] [phantom] Successfully injected Casper client-side utilities

Page http://example.com has no errors