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arry to object using reduce

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Luiz Guilherme Bestel answered on May 21, 2020 Popularity 10/10 Helpfulness 4/10

answer arry to object using reduce

related javascript reduce array of objects

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arry to object using reduce

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const posts = [
    {id: 1, category: "frontend", title: "All About That Sass"},
    {id: 2, category: "backend", title: "Beam me up, Scotty: Apache Beam tips"},
    {id: 3, category: "frontend", title: "Sanitizing HTML: Going antibactirial on XSS attacks"}
];

const categoryPosts = posts.reduce((acc, post) => {
    let {id, category} = post;
    return {...acc, [category]: [...(acc[category] || []), id]};
}, {});

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: dev.to

Tags: javascript object reduce using

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Contributed on May 30 2022

Luiz Guilherme Bestel

0 Answers Avg Quality 2/10

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javascript reduce array of objects

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var objs = [
  {name: "Peter", age: 35},
  {name: "John", age: 27},
  {name: "Jake", age: 28}
];

objs.reduce(function(accumulator, currentValue) {
  return accumulator + currentValue.age;
}, 0); // 35 + 27 + 28 = 90

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 21 2020

TC5550

0 Answers Avg Quality 2/10

reduce method in javascript array of bjects

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-2

var arr = [{x:1}, {x:2}, {x:4}];
arr.reduce(function (acc, obj) { return acc + obj.x; }, 0); // 7
console.log(arr);

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Dec 24 2020

Hurt Hamster

0 Answers Avg Quality 2/10

passing object to reduce in js

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const FRUITS = ["banana", "apple", "orange", "banana", "orange", "apple", "apple", "orange", "orange", "banana", "orange", "banana"]
const total = FRUITS.reduce((map, fruit) => ({
  ...map,
  [fruit]: (map[fruit] || 0) + 1,
}), {})
console.log(total) // { banana: 4, apple: 3, orange: 5}

Popularity 8/10 Helpfulness 2/10 Language javascript

Source: vmarchesin.medium.com

Tags: javascript j

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Contributed on Sep 30 2023

Selfish Skylark

0 Answers Avg Quality 2/10

arry to object using reduce

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