Merge JSON Object with same “key” and add their “value” using JavaScript

Question

My JSON looks like this

{\"rows\":[
    {\"key\":[\"zeit.de\"],\"value\":98},
    {\"key\":[\"google.com\"],\"value\":49},
    {\"key\":[\"spiegel.de\"],\"value\         


        

Answer 1

you can use lodash

let result = [{'a': 3, 'b': 2}, {'a': 4, 'c': 1}, {'a': 4, 'c': 1}];
let m = _.reduce((_.uniq(_.flattenDeep(_.map(result, i => _.keys(i))))), function (s, v) {
    s[v] = _.sumBy(result, function (o) {
        return o[v];
    });
    return s
}, {});

console.log(m); // { a: 11, b: 2, c: 2 }