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¿Cómo fusiono dos diccionarios en Javascript?
var a = {}; a['fruit'] = "apple"; var b = {}; b['vegetable'] = "carrot"; var food = {};

La variable de salida 'comida' debe incluir ambos pares clave-valor.

over 4 years ago · Santiago Trujillo
3 answers
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0

Podrías usar Object.assign .

 var a = { fruit: "apple" }, b = { vegetable: "carrot" }, food = Object.assign({}, a, b); console.log(food);

Para el navegador sin compatibilidad con Object.assign , puede iterar las propiedades y asignar los valores manualmente.

 var a = { fruit: "apple" }, b = { vegetable: "carrot" }, food = [a, b].reduce(function (r, o) { Object.keys(o).forEach(function (k) { r[k] = o[k]; }); return r; }, {}); console.log(food);

over 4 years ago · Santiago Trujillo Report

0

Maneras de lograr:

1. Usando el método JavaScript Object.assign() .

 var a = {}; a['fruit'] = "apple"; var b = {}; b['vegetable'] = "carrot"; var food = Object.assign({}, a, b); console.log(food);

2. Usando la función personalizada.

 var a = {}; a['fruit'] = "apple"; var b = {}; b['vegetable'] = "carrot"; function createObj(obj1, obj2){ var food = {}; for (var i in obj1) { food[i] = obj1[i]; } for (var j in obj2) { food[j] = obj2[j]; } return food; }; var res = createObj(a, b); console.log(res);

3. Usando el operador ES6 Spread .

 let a = {}; a['fruit'] = "apple"; let b = {}; b['vegetable'] = "carrot"; let food = {...a,...b} console.log(food)

over 4 years ago · Santiago Trujillo Report

0

Podría usar el operador de propagación en es6, pero necesitaría usar babel para transpilar el código para que sea compatible con todos los navegadores.

 const a = {}; a['fruit'] = "apple"; const b = {}; b['vegetable'] = "carrot"; const food = { ...a, ...b } console.log(food)

over 4 years ago · Santiago Trujillo Report
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