问题
Let's assume we have the following code:
const myVariable = { age: 7, name: "Hunter" };
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);
And the result I want to see is sth like:
"myVariable: {"age":7,"name":"Hunter"}"
Looking forward to see your solution.
回答1:
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).
Following this convention, the solution can look like this:
var HD = HD || {};
HD.nameof = function (obj) {
return Object.keys(obj)[0];
}
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);
Thus, s will contain the result as requested in the question above.
来源：https://stackoverflow.com/questions/37057211/get-the-name-of-a-variable-like-nameof-operator-in-c