javascript - How to access value of variable in Mongo? - 


var = "act"; db.s.findone( {    brandid: doc.brandid,     : {$exists:false}  } ).a;

i try pass value of variable "a" mongoscript. looks can not used. can help?

build query step step , not use . use [] instead

var = 'act'; var query = {brandid: doc.brandid}; query[a] = {$exists:false}; db.s.findone(query)[a];

note: 

query.act == query['act'].

just javascript tricks.


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