the operation of two-tier nesting is normal.
db.collection.update({"xxx": "xxx"}, {$inc: {"aaa.bbb": 1}})but now if bbb is uncertain, it is a variable, such as
let x = "bbb";
db.collection.update({"xxx": "xxx"}, {$inc: {`aaa.${x}`: 1}})this will go wrong. What should I do?
this has nothing to do with mongodb . It is a syntax error of js and cannot use an expression as an attribute of an object. When you use backquotes `aaa.$ {x} ` becomes an expression, the syntax will fail.
to achieve results, you can use the following two ways
object extension
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