异步的模块合并管理器-m3m4版本和jquery版本（原创）

　　m3m4版本

(function(w){
    var loading={}
    var models={}

    function define(name,args){
        loading[name]=true
        models[name]=args
    }
    function require(name,callback){
        var next=function(){
            require(name,callback)
        }
        if(loading[name]&&models[name].length==1){
            models[name]=models[name][0]()
            loading[name]=false
        }
        //解析
        if(loading[name]&&models[name].length>1){
            var args=models[name]
            var func=args.pop()
            var len=args.length
            var dataArr=[]
            for(var i=0;i<args.length;i++){
                var model=args[i]
                require(model,function(data){
                    dataArr.push(data)
                    if(--len==0){
                        var sync=args.indexOf("$callback")
                        if(sync==-1){
                            models[name]=func.apply(this,dataArr)
                            loading[name]=false
                            next()
                        }else{
                            dataArr[sync]=function(back){
                                models[name]=back
                                loading[name]=false
                                next()
                            }
                            func.apply(this,dataArr)
                        }
                    }
                })
            }
        }else{
            callback(models[name])
        }
    }
    w.m3m4=function(func){
        func(define,require)
    }
})(typeof window!="undefined"?window:global)

demo1

m3m4(function(define,require){
    define("a",[function(a){
        return "a"
    }])
    define("b",["a","$callback",function(a,callback){
        console.log(a)
        setTimeout(function(){
            callback("b sync")
        },1000)

    }])
    define("c",["$callback","a","b",function(callback,a,b){
        console.log(b)
        console.log(a)
        setTimeout(function(){
            callback("c sync")
        },1000)

    }])
    require("c",function(c){
        console.log(c)
    })
})

　　

　

　jQuery版本

(function($){
    var loading={}
    var models={}

    function define(name,args){
        loading[name]=true
        models[name]=args
    }
    function require(name,callback){
        var next=function(){
            require(name,callback)
        }
        if(loading[name]&&models[name].length==1){
            models[name]=models[name][0]()
            loading[name]=false
        }
        //解析
        if(loading[name]&&models[name].length>1){
            var args=models[name]
            var func=args.pop()
            var len=args.length
            var dataArr=[]
            for(var i=0;i<args.length;i++){
                var model=args[i]
                require(model,function(data){
                    dataArr.push(data)
                    if(--len==0){
                        var sync=args.indexOf("$callback")
                        if(sync==-1){
                            models[name]=func.apply(this,dataArr)
                            loading[name]=false
                            next()
                        }else{
                            dataArr[sync]=function(back){
                                models[name]=back
                                loading[name]=false
                                next()
                            }
                            func.apply(this,dataArr)
                        }
                    }
                })
            }
        }else{
            callback(models[name])
        }
    }
    $.define=define
    $.require=require
})($)

　　demo2

var define= $.define
var require= $.require
define("a",[function(a){
    return "a"
}])
define("b",["a","$callback",function(a,callback){
    console.log(a)
    setTimeout(function(){
        callback("b sync")
    },1000)

}])
define("c",["$callback","a","b",function(callback,a,b){
    console.log(b)
    console.log(a)
    setTimeout(function(){
        callback("c sync")
    },1000)

}])
require("c",function(c){
    console.log(c)
})