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filter array inside array

Johiny answered on December 12, 2021 Popularity 9/10 Helpfulness 4/10

answer filter array inside array

related filter array with an array

filter array inside array

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//you can do a .map to iterate over the first level array
// and return an object that have all the other things in the array with spred operator
// and add a new property that will be the second level array filtered
arrayTier1.map((item) => {
        return ({...item, arrayTier2: item.arrayTier2.filter(subitem => subitem.value == 2)});

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: filter javascript

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Contributed on Dec 12 2021

Johiny

0 Answers Avg Quality 2/10

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filter array with an array

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-1

/* Here's an example that uses (some) ES6 Javascript semantics to filter an object array by another object array. */

        // x = full dataset
        // y = filter dataset
        let x = [
            {"val": 1, "text": "a"},
            {"val": 2, "text": "b"},
            {"val": 3, "text": "c"},
            {"val": 4, "text": "d"},
            {"val": 5, "text": "e"}
            ],
            y = [
            {"val": 1, "text": "a"},
            {"val": 4, "text": "d"}               
            ];

        // Use map to get a simple array of "val" values. Ex: [1,4]
        let yFilter = y.map(itemY => { return itemY.val; });

        // Use filter and "not" includes to filter the full dataset by the filter dataset's val.
        let filteredX = x.filter(itemX => !yFilter.includes(itemX.val));

        // Print the result.
        console.log(filteredX);
 Run code snippet

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: filter fi

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Contributed on Sep 18 2022

mighty aoanan

0 Answers Avg Quality 2/10

filter array inside array

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