Filtering an array by multiple property values

Question

I have an array of the form

var cars = [
   {name: "BMW X5", topsales: ["USA", "China", "Russia"], maxspeed: 250, users: ["teenage", "ladies", "mens"]}
   {name: "Volkswagen Touareg", topsales: ["USA", "Germany"], maxspeed: 240, users: ["teenage", "mens", "old mens"]}
   etc....
]

I am trying to filter, let's say like this:

var query = {
   topsales: ["USA", "China"],
   users: "teenage"
}
function nestedFilter(targetArray, filters) {
     var filterKeys = Object.keys(filters);
     return targetArray.filter(function (eachObj) {
         return filterKeys.every(function (eachKey) {
             if (!filters[eachKey].length) {
                 return true; 
             }
             return filters[eachKey].includes(eachObj[eachKey]);
          });
     });
};
goodresult = nestedFilter(cars, query);

But the function doesn't work as it should. If the object has one value in the property, then it filters, but if there are several of them, and I need at least one of them to satisfy the search, then it does not filter. Help who can please

Answer 1

You could check if query is an array and/or the value is an array and check accordingly.

function nestedFilter(data, query) {
    const
        filters = Object.entries(query);

    return data.filter(o => filters.every(([k, v]) => Array.isArray(v)
        ? Array.isArray(o[k])
            ? v.some(s => o[k].includes(s))
            : v.includes(o[k])
        : Array.isArray(o[k])
            ? o[k].includes(v)
            : o[k] === v
    ));
}

const
    cars = [{ name: "BMW X5", topsales: ["USA", "China", "Russia"], maxspeed: 250, users: ["teenage", "ladies", "mens"] }, { name: "Volkswagen Touareg", topsales: ["USA", "Germany"], maxspeed: 240, users: ["teenage", "mens", "old mens"] }],
    query = { topsales: ["USA", "China"], users: "teenage" };

console.log(nestedFilter(cars, query));