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how to merge duplicate value in array of object site:stackoverflow.com

Zany Zebra answered on May 7, 2021 Popularity 3/10 Helpfulness 1/10

answer how to merge duplicate value in array of object site:stackoverflow.com

how to merge duplicate value in array of object site:stackoverflow.com

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var myArray = [
    {productId: 116605, productserialno: "324234"},
    {productId: 106290, productserialno: "12121"},
    {productId: 106290, productserialno: "12121"},
    {productId: 106293, productserialno: "4324343"}
];

var grouped = myArray.reduce(function (obj, product) {
    obj[product.productId] = obj[product.productId] || [];
    obj[product.productId].push(product.productserialno);
    return obj;
}, {});

var groups = Object.keys(grouped).map(function (key) {
    return {product: key, productserialno: grouped[key]};
});

var pre = document.createElement("pre");
pre.innerHTML = JSON.stringify(groups, null, 4);
document.body.appendChild(pre);

Popularity 3/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: javascript merge object

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Contributed on May 07 2021

Zany Zebra

0 Answers Avg Quality 2/10

how to merge duplicate value in array of object site:stackoverflow.com

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