JavaScript 变量赋值

function clone(data,deep){
    var cloneData = undefined;
    var data = arguments[0],deep = arguments[1];
    if(!deep){
        return data;
    }else{
        if(typeof deep === ‘boolean‘){
            if(className(data) === ‘Object‘){
                cloneData = {};
                for(key in data){
                    if(data.hasOwnProperty(key)){
                        cloneData[key] = arguments.callee(data[key],deep);
                    }
                }
                return cloneData;
            }else if(className(data) === ‘Array‘){
                cloneData = [];
                for(var i = 0,len = data.length;i<len;i++){
                   cloneData[i] =  arguments.callee(data[i],deep);
                }
                return cloneData;
            }else{
                return data
            }
        }else{
            return data;
        }
    }
}

function className(obj){
    return Object.prototype.toString.call(obj).slice(8,-1);
}