You could also just overload the default console.log function: var fs = require(‘fs’); var util = require(‘util’); var log_file = fs.createWriteStream(__dirname + ‘/debug.log’, {flags : ‘w’}); var log_stdout = process.stdout; console.log = function(d) { // log_file.write(util.format(d) + ‘\n’); log_stdout.write(util.format(d) + ‘\n’); }; Above example will log to debug.log and stdout. Edit: See multiparameter version by … Read more
The console will print the result of evaluating an expression. The result of evaluating console.log() is undefined since console.log does not explicitly return something. It has the side effect of printing to the console. You can observe the same behaviour with many expressions: > var x = 1; undefined; A variable declaration does not produce … Read more
Console API is not a standard API that is defined in any specification but is something that is implemented across all browsers, so vendors are usually at their liberty to implement in their own fashion as there’s no standard spec to define the output of any methods in API. Unless you check the actual implementation … Read more
If you want to have the this property be consistent, you should bind the functions that are being called. For example, setInterval(function() { /* code here */ }.bind(this), 500) That way, the this of the inner function will be the same as that of the outer function.
alert() is blocking alert() cannot be easily suppressed in non-debug environment console typically formats your objects nicely and allows to traverse them logging statements often have an interactive pointer to code which issued logging statement you cannot look at more than one alert() message at a time consoles can have different logging levels with intuitive … Read more
After a lot of digging, I found that this has been reported as a bug, fixed in Webkit, but apparently not yet pulled into Google Chrome. As far as I can tell, the issue was originally reported here: https://bugs.webkit.org/show_bug.cgi?id=35801 : Description From mitch kramer 2010-03-05 11:37:45 PST 1) create an object literal with one or … Read more
This happened to me when I was being lazy and included a script tag as part of the content that was being returned. As such: Partial HTML Content: <div> SOME CONTENT HERE </div> <script src=”https://stackoverflow.com/scripts/script.js”></script> It appears, at least in my case, that if you return HTML content like that via xhr, you will cause … Read more
It’s not a jQuery feature but a feature for debugging purposes. You can for instance log something to the console when something happens. For instance: $(‘#someButton’).click(function() { console.log(‘#someButton was clicked’); // do something }); You’d then see #someButton was clicked in Firebug’s “Console” tab (or another tool’s console — e.g. Chrome’s Web Inspector) when you … Read more
Can’t access object property, even though it shows up in a console log
I think you’re looking for console.dir(). console.log() doesn’t do what you want because it prints a reference to the object, and by the time you pop it open, it’s changed. console.dir prints a directory of the properties in the object at the time you call it. The JSON idea below is a good one; you … Read more