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如何检查以查看正在访问的对象,从而有效地创建动态设置器?

我想做这样的事情:

var People = {};
// ...some code to change accessor on People...
var greeting = People.StevenSpielberg;
alert(greeting); // "Hi StevenSpielberg!"

我可能写的伪代码是:

People[name] = function(name) { return "Hi " + name; }

有任何想法吗?

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