Guide to combining an object with an array object in Vue.js

After receiving an API response's data,

[{id: 1, name:"Test 1"},{id: 2, name:"Test 2"}]

I am working on my component .vue file.

...
    created() {
       const request = axios.get("***api_url***").then(response => {
          const result = response.data;
          const placeholder = { 'id': 0, 'name': '[Select]' };
          const newObject = result.concat( placeholder.map( item => ({id: item.id, name: item.name}) ) );
          console.log(newObject);
      });
   }

The goal is to combine the placeholder object with the API response data.

Answer №1

Outcome actually comes in the form of a list. The destructuring assignment can be utilized

  const outcome = [{id: 1, name:"Test 1"},{id: 2, name:"Test 2"}];
  const placeholder = {id:0, name: "[Select]"};

  const newResult = [ placeholder, ...outcome ];

in order to add the placeholder at the beginning.

If using concat, make sure to encapsulate the placeholder in a list.

[placeholder].concat(outcome)

for achieving the same outcome in a "more traditional manner".

Alternatively, you have the option to employ Object.unshift as proposed by @kemicofa ghost.

outcome.unshift(placeholder)

Answer №2

Vue is a progressive JavaScript framework, allowing us to utilize the same JavaScript functions for object merging within Vue.

Make sure to employ this handy feature in your code!

Object.assign(target, Obj1, Obj2, ...);

Sincerely, Albert

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