Fusionner 2 tableaux d'objets

Question

Prenons un exemple.

var arr1 = new Array({name: "lang", value: "English"},
                     {name: "age", value: "18"});

var arr2 = new Array({name : "childs", value: '5'},
                     {name: "lang", value: "German"});

Je dois fusionner ces deux tableaux d'objets et créer le tableau suivant :

var arr3 = new Array({name: "lang", value: "German"},
                     {name: "age", value: "18"},
                     {name : "childs", value: '5'});

Existe-t-il une fonction JavaScript ou jQuery pour faire cela ?

$.extend ne me convient pas. Il retourne

var arr4 = new Array({name : "childs", value: '5'},
                     {name: "lang", value: "German"});

Answer 1

En utilisant lodash vous voulez _.uniqBy

var arr3 = _.uniqBy(arr1.concat(arr2), 'name'); // es5

let arr3 = _.uniqBy([...arr1, ...arr2], 'name'); // es6

L'ordre de arr1, arr2 est important !

Voir docs https://lodash.com/docs/4.17.4#uniqBy

Answer 2

const extend = function*(ls,xs){
   yield* ls;
   yield* xs;
}

console.log( [...extend([1,2,3],[4,5,6])]  );

Answer 3

merge(a, b, key) {
    let merged = [];
    a.forEach(aitem => {
        let found = b.find( bitem => aitem[key] === bitem[key]);
        merged.push(found? found: aitem);
    });
    return merged;
}

Answer 4

//No need for using libraries and so on..
//You can just do
var arr1 = [{name: "lang", value: "English"},{name: "age", value: "18"}];
var arr2 = [{name : "childs", value: '5'}, {name: "lang", value: "German"}];

const arr3 = arr1.concat(arr2);
console.log(arr3);  // final merged result will be in arr3