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rameshbaskar/getRandomItemsFromArray.js

Created March 8, 2023 06:43
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  1. rameshbaskar created this gist Mar 8, 2023.
    9 changes: 9 additions & 0 deletions getRandomItemsFromArray.js
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    Original file line number Diff line number Diff line change
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    function getRandomItemsFromArray(sourceArray, numOfItems) {
    if (numOfItems > sourceArray.length) {
    throw new Error('Trying to get more items than the array length!!!');
    }
    const shuffledArray = sourceArray.concat().sort((() => Math.random() - 0.5);
    return shuffledArray.slice(0, (numOfItems - 1));
    }

    // The concat() function returns a copy of the sourceArray so that the original array is not modified.