Log4Jse

Log4Jse is a very simple and easy logger lib for Javascript, with only one .js file(Less than 200 code lines), and one global variable Logger.

This project aims to create a stripped version of log4j in order to get the most common used functionality from it while maintaining only the necessary source code to get this functionality working.

Features

• Simple, Lightweight and Easy-To-Custom
• Similar to Log4Javascript which similar to Log4J, but more simple
• With 5 logging level: ALL,DEBUG,INFO,WARNNING,ERROR,NONE
• Easy to use: Logger('MyLoggerName').info("Hello World!")'
• Custom output method, you can export logs in the way you like within Js

Usage

That's a very briefly introduction, Log4Jse is so simple that you can get more information by reading its source.

1. First, include Log4Jse.js file

    <script type="text/javascript" src="Log4Jse.js"></script>
   

• Configure Log4Jse

    Logger.define = {
    	"view": { //* one logger called "view
    		level: "debug", // output level
    		dateFormat: "yyyy-MM-dd hh:mm:ss", // no comment
    		tpl: "{TIMESTAMP},{LOGGERLEVEL}[{LOGGERNAME}]:", // prefix template of output text
    		outway: function(prefix,msg,obj) {  // use this for output
    			switch(obj.level) {
    				case "ERROR":
    					console.error(prefix,msg);
    					break;
    				case "WARNNING":
    					console.warn(prefix,msg);
    					break;
    				default:
    					console.log(prefix,msg);	
    			}
    		}
    	},
    	"app": { //* another logger
    		outway: function(prefix,msg) {
    			alert(prefix + msg);
    		}
    	}
    }
  

• Use it easily

    // Usage:
    var mylog = Logger.get("app");
    mylog.log("Hello my app!!");
    
    var viewlog = Logger.get("view");
    viewlog.warn("where am I?");
    viewlog.error("I don't want work!!");
    
    Logger.get("view").info("Goodbye");
    
    // Above will pop an window, and output these in console:
    // 2011-10-22 17:20:54,WARNNING[view]: where am I?
    // 2011-10-22 17:20:54,ERROR[view]: I don't want work!!
    // 2011-10-22 17:20:54,INFO[view]: Goodbye