if(!window.console){
var names = [log, debug, info, warn, error, assert, dir, dirxml,group, groupend, time, timeend, count, trace, profile, profileend];
window.console = {};
for (var i = 0; i window.console[names[i]] = function() {};
}
}
可以放在基础库里面，当然，注意names和i的作用域~