扩展prototype.js Object.deepExtend深度扩展
Object.deepExtend = function(destination, source) { for (var property in source) { if (source[property] && source[property].constructor && source[property].constructor === Object) { destination[property] = destination[property] || {}; arguments.callee(destination[property], source[property]); } else { destination[property] = source[property]; } } return destination;};?