logging.js

Easy lib to trace function calls and write log messages into the console object. Requires require.js.

Latest Release:

logging.js is copyright 2014 by DracoBlue http://dracoblue.net

Installation

Copy the logging.js into your project or require it with bower:

$ bower install logging.js

Usage

This is a simple example, how logging.js works.

require(['logging'], function(logging) {
    "use strict";

    var Example = function() {
        logging.applyLogging(this, 'Example', ['hideMe']);
    };

    Example.prototype.callOne = function() {
    };

    Example.prototype.callTwo = function() {
        this.logDebug('Hai!');
        this.logError('Oh noes!');
    };

    Example.prototype.hideMe = function() {
    };

    var example = new Example();
    example.callOne('hai'); // => TRACE [Example.callOne] hai
    example.hideMe(); // nothing happens
    example.callTwo(); // => TRACE [Example.callTwo]
                       // => DEBUG [Example] Hai!
                       // => ERROR [Example] Oh noes!
});

logging.applyLogging(target, loggingPrefix[, disableTracing=false])

Will enable this.logDebug, this.logInfo, this.logWarn, this.logError and this.logTrace, for the given target.

Additionally all functions on target will be wrapped with a logTrace call. Thus you can easily follow the call flow in the console of your browser.

logging.applyLogging(target, loggingPrefix, fromTracingExcludedMethods)

Works like the previous method, but if you pass in an array of function names, which you do not want to trace - those will be excluded from tracing.

Changelog

• 1.0.3 (2015/10/22)
  • fixed name of logWarn method
• 1.0.2 (2015/09/03)
  • automatic tracing only active if logging.level >= logging.LEVEL_TRACE
• 1.0.1 (2014/08/31)
  • tracing now with Example.callTwo instead of Example callTwo (for easier filtering)
  • fixed a bug with fromTracingExcludedMethods
  • added documentation for the applyLogging method
  • wrapped the documentation example into a require js definition
• 1.0.0 (2014/08/31)
  • initial release

License

logging.js is licensed under the terms of MIT.