Only filter the array by its value if the value is specified

Is there a way to apply this filter while only checking each condition if the value is not undefined?
For instance, if taxId is undefined, I would like to skip it rather than using it as a filter criterion.

this.subAgencies = demoSubAgencies.filter(function(subAgency) {
  return subAgency.subAgencyName == agencyName
    && subAgency.taxId == taxId
    && subAgency.accountNumber == accountNumber;
});

Answer №1

Utilize "or" conditions within the "and" groups as illustrated below:

this.departments = sampleDepartments.filter(function(department) {
  return (department.departmentName == name || !name ) 
    && (department.manager == manager || !manager)
    && (department.location == location || !location) ;
});

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