Remove numeric values from an object where the values are all strings but a mix of letter and numbers

Question

I have to call an api that returns an array of objects:

"supervisors": [
    {
        "jurisdiction": "u",
        "lastName": "Olson",
        "firstName": "Karson"
    },
    {
        "jurisdiction": "9",
        "lastName": "Heller",
        "firstName": "Robbie"
    },
    {
        "jurisdiction": "b",
        "lastName": "Cremin",
        "firstName": "Elijah"
    },
]

The supervisors must be sorted in alphabetical order, first by jurisdiction, then my last name, finally by first name. Then Numeric jurisdictions should be removed from the response.

I sorted alphabetically by:

supervisorsObj.sort((a, b) => {
      a.jurisdiction.toLowerCase().localeCompare(b.jurisdiction.toLowerCase());
    });

But how do I remove Numeric jurisdictions if they are all strings?

Answer 1

One option would be to use regular expressions, e.g

filtered = data.supervisors.filter(s => !/^d+$/.test(s.jurisdiction))

will only remove jurisdictions that consists entirely of digits.