Javascript：按名称访问对象的成员 [英] Javascript: access to an object's member by name

问题描述

我有一个名为的对象themesData ：

var themesData = {}
themesData.a = { key: "value" }; 
themesData.b = { key: "another value"};

...我希望通过其名称访问其中一个成员。我得到一个包含a或b的字符串，我希望获得相应成员的价值。

...and I want to access one of the members by its name. I get a string which contains either "a" or "b" and I want to get the appropriate member's value.

我很乐意得到一些帮助。

I'd be happy to get some help on that.

推荐答案

themesData [a] .key 做你做的需要并且相当于 themesData.a.key ，仍然数组索引样式表示法允许您动态生成索引名称。

themesData["a"].key does what you need and is equivalent to themesData.a.key, still the "array index style" notation allows you to dynamically generate index names.

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