How do I get the name of an object's type in JavaScript

最新推荐文章于 2024-04-23 18:35:32 发布

转载最新推荐文章于 2024-04-23 18:35:32 发布 · 516 阅读

本文介绍了一种在JavaScript中获取对象类型的技巧，通过修改Object原型来实现类似Java中的getClass().getName()的功能。文中提供了具体实现代码，并讨论了这种方法的局限性和适用场景。

这群逆天的家伙，天天脑子在想什么？

http://stackoverflow.com/questions/332422/how-do-i-get-the-name-of-an-objects-type-in-javascript 仅仅推荐这个，剩下两个有心情可以读读

Is there a JavaScript equivalent of Java's class.getName()?

No.

But here are various hacks that all fall down in one way or another:

Here is a hack that will do what you need - be aware that it modifies the Object's prototype, something people frown upon (usually for good reason)

Object.prototype.getName = function() { 
   var funcNameRegex = /function (.{1,})\(/;
   var results = (funcNameRegex).exec((this).constructor.toString());
   return (results && results.length > 1) ? results[1] : "";
};

Now, all of your objects will have the function, getName(), that will return the name of the constructor as a string. I have tested this in FF3 and IE7, I can't speak for other implementations.

http://blog.youkuaiyun.com/cs_wuxiang/article/details/7724133 国内也有厉害角色

http://stackoverflow.com/questions/1249531/how-to-get-a-javascript-objects-class