title: get value of slider with (change) of particular slider while using multiple sliders
body: <p>I have multiple slider in a component and i'm using <code>nouislider</code></p>
  
  <pre><code>&lt;nouislider [connect]="true"  [(ngModel)]="someValue" 
  [config]="someKeyboardConfig" (change)="saveRange($event)"&gt;&lt;/nouislider&gt;
  
  &lt;nouislider [connect]="true"   [(ngModel)]="someValue1" 
  [config]="someKeyboardConfig" (change)="saveRange($event)"&gt;&lt;/nouislider&gt;
  </code></pre>
  
  <p><strong>component.ts</strong></p>
  
  <pre><code>saveRange(value) {
      console.log('Value changed to', value);
    }
  </code></pre>
  
  <p>I get value on (change)` but don't know which slider value it is I have 7 slider like this in one page. How to know which sliders value it is.
  After getting slider range I want to write it in json file</p>
  
  <p>Please suggest me a way here.</p>