Javascript：ReferenceError：MyClass未定义 [英] Javascript: ReferenceError: MyClass is not defined
问题描述
这是非常基本的。我尝试实例化在嵌入的外部.js文件中定义的类。 .js的代码就是这样。
This is very basic. I try to instantiate a Class defined in an external .js file embedded. The code of the .js is simply this.
(function() {
var MyClass;
MyClass = (function() {
function MyClass() {}
MyClass.prototype.name = function(name) {};
return MyClass;
})();
}).call(this);
HTML是这样
<!DOCTYPE html>
<html>
<head>
<title>Sample Page</title>
<script src="file.js" type="text/javascript"></script>
</head>
<body>
</body>
</html>
如果我尝试在控制台实例化类，但我看到一个 ReferenceError ：MyClass未定义：
If I try on the console to instantiate the class but I see a ReferenceError: MyClass is not defined:
var myVar
myVar = new MyClass
> ReferenceError: MyClass is not defined
如果我尝试调用 MyClass 直接从控制台我得到相同的错误
If I try to call MyClass directly from console I get the same error
> ReferenceError: MyClass is not defined
我确定我在这里缺少一些可怕的东西，它出来了什么。
I'm sure I missing something terrible obvious here but yet I can figure it out what.
更新：要创建JavaScript编码，我正在使用CoffeScript，代码就是这样。
Updated: To create the javascript coded I'm using CoffeScript, the code is simply this.
class MyClass
acc: (name) ->
当使用 http://js2coffee.org 渲染到不同的代码，它仍然不工作。 Wonder如果CoffeScript有一个提示，将MyClass从局部范围弹出到外部范围。
The proposed answers codes when converted back to CoffeScript using http://js2coffee.org render into a different code and it still doesn't work. Wonder If there's a hint on CoffeScript to eject MyClass from local scope to the outer scope.
推荐答案
。而你想做的是通过将其设置到窗口对象弹出到外部范围：
My class is defined inside a closure. Rather what you want to do is "eject" it into the outer scope by setting it to the window object:
(function() {
var myClass = ...
window.myClass = myClass;
}).call( this );
更新：好像你想在CoffeeScript中使用它。您在这里：
Update: It seems you wanted it in CoffeeScript. Here you go:
(->
myClass = (->
myClass = ->
myClass::name = (name) ->
myClass
)()
window.myClass = myClass
).call this
JSBin Demo
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