SO#56099819

components.menu-component.js

import Ember from 'ember';

const linkList = [
    {link: '#about', name: 'About'},
    {link: '#base', name: 'Base'},
    {link: '#blog', name: 'Blog'},
    {link: '#contact', name: 'Contact'},
    {link: '#custom', name: 'Custom'},
    {link: '#support', name: 'Support'},
    {link: '#tools', name: 'Tools'} 
];

export default Ember.Component.extend({
  filter: null,
  
  filteredLinkList: Ember.computed('filter', function() {
    const filter = this.get('filter');

    if(!filter) {
      return linkList;
    }

    const upperCaseFilter = filter.toUpperCase();
    return linkList.filter((item) => {
      return item.name.toUpperCase().indexOf(upperCaseFilter) >= 0;
    });
  }),
  
  actions: {
    filterChanged(filter) {
      this.set('filter', filter);
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{menu-component}}
<br>
<br>

templates.components.menu-component.hbs

{{input type="text" placeholder="Search.." id="myInput" key-up=(action 'filterChanged')}}

<br><br>

{{#each filteredLinkList as |item|}}
  <a href={{item.link}}>{{item.name}}</a>
{{/each}}

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"
  }
}