JS debugging tips Firefox Debugging Tips Summary

Firebug Starter Guide : http://www.ruanyifeng.com/blog/2008/06/firebug_tutorial.html firebug Console detailed : http://www.cnblogs.com/see7di/archive/2011/11/21/2257442.html

Http://www.cnblogs.com/leejersey/archive/2012/11/27/2790998.html

Debugger

JS in call console write log

Console.log ("some log");

Console.warn ("some warning");

Console.error ("some error");

IE: the console can only be used when the IE developer tool is turned on, and the default access to IE's console object will be an error.

FF and Chrome are fine.