Default value needed if key not exist inside some object in array of objects

[RSG6558]

Hi, I am looking for a solution where my data is
[ { "name": "rahul", "email": "rahul@domain.com" }, { "name": "amit", "email": "amit@domain.com" }, { "email": "divyesh@domain.com" }, { "name": "brijesh", "email": "brijesh@domain.com" } ]
Note: name key is missing in third object

query: [].name

result:
[ "rahul", "amit", "brijesh" ]

expected result:
[ "rahul", "amit", "", "brijesh" ]

please help

Thanks

[darrenmothersele]

Does this help?

map(&(name || ``), @)

Online demo: https://codesandbox.io/s/fervent-architecture-o7p7r?file=/src/index.js

[darrenmothersele]

Explanation:

The & denotes an expression is to be used as a value, rather than it being evaluated.

The map function takes an expression and an array as arguments. It applies the expression to each item in the array and returns an array of the results.

And `` denotes an empty string. The expression name || `` means that if the value for name is null then the empty string is used instead.

[RSG6558]

Hi,
thanks @darrenmothersele this solution perfectly worked for me. and thanks for explanation as well.

[nabheet]

Is this two backticks? or two single quotes? it seems both work but wanted to clarify?