inputs array

components.current-ts.js

import Ember from 'ember';
import { computed } from '@ember/object';

export default Ember.Component.extend({
  ts: computed(function () {
    return performance.now()
  })
});

components.inputs-array.js

import Component from "@ember/component";

export default Component.extend({
  init(...args) {
    this.setProperties({
      arr: [{ v: "aaa" }, { v: "bbb" }, { v: "ccc" }]
    });
    this._super(...args);
  },

  actions: {
    updateArr(index, e) {
      this.set("arr", [
        ...this.arr.slice(0, index),
        {
          ...this.arr[index],
          v: e.target.value
        },
        ...this.arr.slice(index + 1)
      ]);
    },
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

{{inputs-array}}

<br>
<br>
{{outlet}}
<br>
<br>

templates.components.current-ts.hbs

{{ts}}

templates.components.inputs-array.hbs

<p>Notice when you type in the input, it triggers the rerender and the input lose focus, this wouldn't happen in react.js or vue.js, I think it's an ember issue</p>
<ul>
  {{#each arr as |item index|}}
  <li>
    {{input value=(readonly item.v) input=(action "updateArr" index)}} <br>
    {{item.v}} {{current-ts}}<br>
  </li>
  {{/each}}
</ul>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}