mongodb set field code example

Example 1: mongodb update

db.collectionName.update({"aField":"vale1"},{$set:{"anotherField":"value2"}})

-search for documentations for more examples than search
-aField is used to find the documents
-anotherField is the field that will be updated
-You can also use the below:
-- updateOne
-- findOneAndUpdate

Example 2: $set

// https://mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

//To update only selected fields, $set operator needs to be used. Following replacement object replaces author value but leaves everything else intact.

collection.update({_id:"123"}, {$set: {author:"Jessica"}});