Javascript：按名称访问对象的成员

Question

I have an object called themesData :

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

...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.

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

Answer 1

themesData["a"].key themesData.a.key您的需求，并且与themesData.a.key等效，但“数组索引样式”表示法仍允许您动态生成索引名称。

Answer 2

You can do it in this way:

var member="a"; //or B
var rightMember=themesData[member].key;