如何在JavaScript中将变量名转换为字符串？

var variableName = "value";
var stringName = "variableName";
console.log(stringName); // 输出 "variableName"

var variableName = "value";
var stringName = JSON.stringify({variableName: variableName});
console.log(stringName); // 输出 '{"variableName":"value"}'

var variableName = "value";
var stringName = Object.keys({variableName})[0];
console.log(stringName); // 输出 "variableName"

var variableName = "value";
var stringName = eval('variableName');
console.log(stringName); // 输出 "value"