在变量名是字符串时声明变量？

everyone!

I have an array containing some strings:

我有一个包含一些字符串的数组:

strs = ['a1','a2','a3']

and an object is defined:

并定义了一个对象:

o={}

I wanna add properties to o while the property name is the string in array strs Any suggestion is appreciated

我想添加属性为o而属性名称是数组中的字符串strs任何建议表示赞赏

2 个解决方案

Try the following

请尝试以下方法

for (var i = 0; i < strs.length; i++) {
  var name = strs[i];
  o[name] = i;
}

This code will create the properties with the given name on the object o. After the loop runs you will be able to access them like so

此代码将在对象o上创建具有给定名称的属性。循环运行后,您将能够像这样访问它们

var sum = o.a1 + o.a2 + o.a3;  // sum = 3

Here's a fiddle which has some sample code

这是一个小提琴,有一些示例代码