不区分大小写访问JavaScript属性？ [英] Access JavaScript property case-insensitively?

问题描述

假设我有一个对象：

var obj = {
  foo:"bar",
  fizz:"buzz"
};

我需要动态访问该对象的属性，如下所示：

I need to access a property of that object dynamically like so:

var objSetter = function(prop,val){
  obj[prop] = val;
}

那里没有问题，除了 prop 需要不区分大小写，例如 Foo 而不是 foo 。

No problems there, except for that prop needs to be case insensitive in case the property name is passed into the function as, say, Foo instead of foo.

那么如何在不考虑案例的情况下按名称指向对象的属性？我想尽可能避免迭代整个对象。

So how can I point to an object's property by name without regard to case? I would like to avoid iterating the entire object if possible.

推荐答案

将obj的所有属性与prop进行比较。

Compare all the properties of obj with prop.

var objSetter = function(prop,val){
  prop = (prop + "").toLowerCase();
  for(var p in obj){
     if(obj.hasOwnProperty(p) && prop == (p+ "").toLowerCase()){
           obj[p] = val;
           break;
      }
   }
}

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