Javascript - 无法实例化同一对象的多个实例 [英] Javascript - Cannot instantiate multiple instances of the same object

问题描述

我正在尝试实例化同一对象的多个实例。第一个实例化工作正常，但是当我尝试初始化另一个对象时，我收到此错误，

I am trying to instantiate multiple instances of the same object. The first instantiation works fine, but when I try to initialize another object, I get this error,

未捕获TypeError：Object＃< draw>没有方法'width'

这里是小提琴，这是我的代码：

here is the fiddle, and here is my code:

function halo() {
  var width = 720, // default width
      height = 80; // default height

  function draw() {
    // main code
    console.log("MAIN");
  }

  draw.width = function(value) {
    if (!arguments.length) return width;
    width = value;
    return draw;
  };

  draw.height = function(value) {
    if (!arguments.length) return height;
    height = value;
    return draw;
  };

  return draw;
}

var halo = new halo();
halo.width(500);

var halo2 = new halo();
halo2.width(300);

总之，我的目标是实例化同一类的多个实例。

In summary, my objective is to instantiate multiple instances of the same "class".

推荐答案

您正在重新定义 halo cunstructor：

You are redefining halo cunstructor:

var halo = new halo(); // <-- change variable name to halo1
halo.width(500);

var halo2 = new halo();
halo2.width(300);

修正版： http://jsfiddle.net/GB4JM/1/

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