如何在JavaScript中将变量名转换为字符串？ [英] How to convert variable name to string in JavaScript?

问题描述

有没有办法在javascript中将变量名转换为字符串？更具体地说：

Is there a way to convert variable names to strings in javascript? To be more specific:

var a = 1, b = 2, c = 'hello';
var array = [a, b, c];

现在，在我通过数组的某个时刻，我需要获取变量名称（而不是他们的名字）值）作为字符串 - 将是'a'或'b'或'c'。我真的需要它成为一个字符串，所以它是可写的。我该怎么做？

Now at some point as I go through the array, I need to get variable names (instead of their values) as strings - that would be 'a' or 'b' or 'c'. And I really need it to be a string so it is writeable. How can I do that?

推荐答案

使用Javascript对象文字：

Use a Javascript object literal:

var obj = {
    a: 1,
    b: 2,
    c: 'hello'
};

然后你可以这样遍历它：

You can then traverse it like this:

for (var key in obj){
    console.log(key, obj[key]);
}

并访问对象上的属性，如下所示：

And access properties on the object like this:

console.log(obj.a, obj.c);

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