当存在赋值语句时，在javascript文件中提供名称空间

我有一段javascript代码，我想为其添加一个名称空间。在该代码中，有一个赋值操作发生在函数之外。有人能告诉我如何把它放在命名空间中吗？代码如下所示

var mynameSpace={
canvasPanel:{},
stage:{},
someShape:{},

drawLineGraph:function(dataList,color,baseY)
{
//Create a shape
this.dataList=dataList;
this.index=0;
this.currentDay=1;
},

myNameSpace.drawLineGraph.prototype = new createjs.Shape(); //Getting the problem here
myNameSpace.drawLineGraph.prototype.constructor = drawLineGraph; //Getting the problem here**
,
drawLegend:function(){
}

};

---

只需将

drawLineGraph

替换为

this即可。drawLineGraph

您可以将函数和后续赋值包装到另一个函数中，然后立即调用它，如下所示：

drawLineGraph: (function() {
   var f = function(dataList, color, baseY {
       // Create a shape
          ... function code ...
   };
   f.prototype = new createjs.Shape();
     ... more assignments ...

   return f; // this will be assigned to drawLineGraph
})(),

---

看起来您正在对象文字定义内执行原型赋值。因此，当您试图修改mynameSpace的原型时，它的drawLineGraph属性不存在。将drawLineGraph原型特性指定移到对象文字下方

var mynameSpace={
    canvasPanel:{},
    stage:{},
    someShape:{},

    drawLineGraph:function(dataList,color,baseY)
        {
        //Create a shape
        this.dataList=dataList;
        this.index=0;
        this.currentDay=1;
    },

    drawLegend:function(){
    }

};
myNameSpace.drawLineGraph.prototype = new createjs.Shape(); //No longer a problem
myNameSpace.drawLineGraph.prototype.constructor = drawLineGraph; //No longer a problem

---

谢谢你的回答。