IE中不支持function.name。 [英] function.name not supported in IE.

问题描述

最近我成了 function.name 属性的忠实粉丝。

例如，我已经编写了扩展原型的功能。

它的工作原理是..

  Array.give （
函数forEach（）{...} 
）; 
  

..这样就可以让你做..

  ['a'，'b'，'c']。forEach（function（）{...}）; 
  

此代码适用于Chrome，Safari，Firefox和Opera，但不适用于IE。

经过一小段挖掘后，我意识到对于给定函数， function.name 刚刚返回 undefined ，返回的其他地方forEach。

<是否有另一种方法可以在IE中获取名称，或者我是否会对这个美妙的财产失去爱？

解决方案

您可以通过调用 <$ c $来解析函数名称。 c> function.toString ^[docs] 。 function.name 是不是标准属性。

  var name = func.toString（）。match（/ ^ function\s *（[^ \s（] +）/）[1]; 
  

---

正如评论所说，这不一定是一种可靠的方式.Imo传递对象会更容易阅读，你可以一次传递几种方法：

  Array.give（{
 forEach：function（）{...}，
 somethingElse：function（）{...} 
}）; 
  

Lately I've become a huge fan of the function.name property.

For example, I've written a function for extending prototypes.

It works in the way of..

Array.give(
    function forEach() { ... }
);

..which would then let you do..

['a', 'b', 'c'].forEach(function () { ... });

This code works great in Chrome, Safari, Firefox, and Opera, but not in IE.

After just a small bit of digging, I realized that to the give function, function.name was just returning undefined, where as in everything else it returned "forEach".

Is there an alternative way to get the name in IE, or should I just fall out of love with this wonderful property?

解决方案

You might be able to parse the function name from calling function.toString ^[docs]. function.name is not a standard property.

var name = func.toString().match(/^function\s*([^\s(]+)/)[1];

---

As the comments also say, this is not necessarily a reliable way. Imo passing an object would be easier to read and you could pass several methods at once:

Array.give({
    forEach: function() { ... },
    somethingElse: function() {...}
});

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