javascript filtering objects and Arrays

July 13, 2022

I’m trying to learn javascript by following a tutorial on youtube, and I found this segment of code.

I understand what filter generally does or at least its purpose, but I don’t know anything about filter conditions what they do exactly? Any explanation will be appreciated.

setFilteredProducts(
    products.filter((item) =>
        Object.entries(filters).every(([key, value]) =>
            item[key].includes(value)
        )
    )
);

>Solution :

.entries(filters)

basically returns an array iterator object which is then being iterated using

.every(([key, value])

This is basically creating an iterator(entries) and iterating(every) through it.
Finally, .includes(value) checks if the value is present in item[key]. It is basically a function to search for an element.

Hope it helps!