获取变量的名称(如C#中的nameof运算符) [英] Get the name of a variable (like nameof operator in C#)
问题描述
我们假设我们有以下代码:
Let's assume we have the following code:
const myVariable = { age: 7, name: "Hunter" };
我想知道变量的名称,而不仅仅是它的值,并将其放入一个字符串或记录它或:
I want to know the name of the variable, not just the value of it, and put it in a string or log it or:
const s = nameof(myVariable) + ': ' + JSON.stringify(myVariable);
我希望看到的结果是这样的:
And the result I want to see is sth like:
"myVariable: {"age":7,"name":"Hunter"}"
期待看到您的解决方案。
Looking forward to see your solution.
推荐答案
这是我自己的回答Q& A风格,带有一点妥协。诀窍在于将参数传递给对象内部的函数名称,方法是将其括在花括号中,例如 nameof({myVariable})
而不是 nameof(myVariable)
。
This is my own answer in Q&A style which comes with a bit of a compromise. The trick is here to pass the parameter to the function nameof inside an object by enclosing it in curly braces, like this nameof({myVariable})
instead of nameof(myVariable)
.
遵循此约定,解决方案如下所示:
Following this convention, the solution can look like this:
var HD = HD || {};
HD.nameof = function (obj) {
return Object.keys(obj)[0];
}
这就是我用它来获取变量/对象名称的方法加上对象的内容/变量的值:
And this is how I use it to get the name of the variable/object plus the object's content/the variable's value:
const s = HD.nameof({myVariable}) + ': ' + JSON.stringify(myVariable);
因此,s将包含上述问题中所要求的结果。
Thus, s will contain the result as requested in the question above.
这篇关于获取变量的名称(如C#中的nameof运算符)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!