title: Angular mention trigger when click any alphabet
body: <p>In my angular project, I am using the angular-mention library for the suggestion of the usernames.
  it is working fine if I type <code>@</code> or <code>#</code>. it will give me the user list only when I type @ or #.</p>
  
  <p>But I don't want to type <code>@</code> or <code>#</code>. I want to type any alphabet so that it will give me the required result.
  suppose if I typed j then it will give me all the username list which starts with character J or j.</p>
  
  <p>can anyone help me with this?</p>
  
  <p>you can refer to this <a href="https://stackblitz.com/edit/angular-hyotig?file=src%2Fapp%2Fapp.component.ts" rel="nofollow noreferrer">working code here... </a>link.</p>
  
  <p>the above link is my working example available but it is working only when I typed @, I want to work when I typed any character</p>
  
  <p>Also, I tried this as below </p>
  
  <pre><code>&lt;input type="text" class="searchBox" [mention]="items" [mentionConfig]="{triggerChar:''}" placeholder="Search user" [(ngModel)]="searchText" /&gt;
  </code></pre>
  
  <p>in the above code triggerChar, I need to put some value if I put @ or # it will work according to that.
  but to work for any character I don't know what to do?</p>