jgyhuzhou 写道
BlackBird, G. Scott Olson开发的javascript日志记录库，相当于java中的log4j, javascript开发者再也不用使用alert来调试啦。
以下是具体的操作说明：
Html代码
复制代码 代码如下:
<html>
<head>
<script type="text/javascript" src="/PATH/TO/blackbird.js"></script>
<link type="text/css" rel="Stylesheet" href="/PATH/TO/blackbird.css" />
...
</head>
</html>
<html>
<head>
<script type="text/javascript" src="/PATH/TO/blackbird.js"></script>
<link type="text/css" rel="Stylesheet" href="/PATH/TO/blackbird.css" />
...
</head>
</html>
<head>
<script type="text/javascript" src="/PATH/TO/blackbird.js"></script>
<link type="text/css" rel="Stylesheet" href="/PATH/TO/blackbird.css" />
...
</head>
</html>
<html>
<head>
<script type="text/javascript" src="/PATH/TO/blackbird.js"></script>
<link type="text/css" rel="Stylesheet" href="/PATH/TO/blackbird.css" />
...
</head>
</html>
Blackbird有一个简单的方法将返回值发送到控制台：
Javascript代码
复制代码 代码如下:
log.debug( 'this is a debug message' );
log.info( 'this is an info message' );
log.warn( 'this is a warning message' );
log.error( 'this is an error message' );
log.debug( 'this is a debug message' );
log.info( 'this is an info message' );
log.warn( 'this is a warning message' );
log.error( 'this is an error message' );
log.info( 'this is an info message' );
log.warn( 'this is a warning message' );
log.error( 'this is an error message' );
log.debug( 'this is a debug message' );
log.info( 'this is an info message' );
log.warn( 'this is a warning message' );
log.error( 'this is an error message' );
这个方法的好处是，所有这些公共的方法都能独立的现实数据。可以很容易的确定发送邮件的类型： 
支持下面的浏览器：
* Internet Explorer 6+
* Firefox 2+
* Safari 2+
* Opera 9.5
另外，如果你使用的是YUI的话，可以考虑YUI中的Logger组件
官方地址 http://www.gscottolson.com/blackbirdjs/