console.log from injected JS not captured by onConsoleMessage

[Jordan Feldstein]

Hi all,

At the top of my phantom script, I set:

page.onConsoleMessage = (msg) ->
    console.log msg

And later on, inject JS with:

page.injectJs("./contentscript.js") 

and inside contentscript.js, I send some messages with (Trying to debug some other strange behavior): 

if(controller)
{
  console.log("Controller exists.")
}
console.log("hello")
console.log(document.body.innerHTML) 

None of these console.log's output anything. (Controller does exist, btw) 

Is there something special that would stop console.log from working in this situation? What am I missing? 

Thanks,

~Jordan Feldstein

[James Greene]

PhantomJS version? Downloaded binaries or compiled from source? Operating system?

Page URL, if you can share?  If not, does this page happen to have frames and/or iframes on it?

~~James

[James Greene]

FYI, it worked just fine for me!

Test Script:

(function(window) {

var scriptToInjectFilename = './writeConsoleMessages.js';

var fs = require('fs');

var createScriptToInject = function() {

var scriptContents = [

'console.log("[console.log] Hello from injected script on page: " + window.location.href);',

'window.console.log("[window.console.log] Hello from injected script on page: " + window.location.href);'

].join('\n');

fs.write(scriptToInjectFilename, scriptContents, 'w');

};

var deleteScriptToInject = function() {

fs.remove(scriptToInjectFilename);

};

var page = require('webpage').create();

page.onConsoleMessage = function(msg) {

console.log("CONSOLE MSG: " + msg);

};

page.open('http://www.google.com/', function(status) {

createScriptToInject();

var injected = page.injectJs(scriptToInjectFilename);

console.log('Injected? ' + injected);

deleteScriptToInject();

phantom.exit(status === 'fail' ? 1 : 0);

});

})(this);

Output:

CONSOLE MSG: [console.log] Hello from injected script on page: http://www.google.com/

CONSOLE MSG: [window.console.log] Hello from injected script on page: http://www.google.com/

Injected? true

Specs:

• PhantomJS 1.7.0
• Downloaded binary
• Windows 7 (64-bit)

~~James

[James Greene]

You may also want to verify that your script injection didn't fail, using the same technique that I used in my test script.

~~James

[match]

Page url is sometimes important. Sometimes sites will set:  window.console.log = function() {};
Which means you can't use it for sending messages from page.  At this point try the experimental window.callPhantom() which you can listen for from phantom's outer space with phantom.onCallback

https://github.com/ariya/phantomjs/wiki/API-Reference

[match]

phantom.onCallback should read page.onCallback

[Jordan Feldstein]

I was working with 8tracks.com, which is one of those sites that cancels out console.log 

Going to work around it with onCallback

Thanks!

~ J

phantom.onCallback should read page.onCallback

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