title: get button value with ng-click or ng-model
body: <p>I have a problem with the angular,
  I have a more than button with value 1 - 9, I would if I click the button 1.
  value of input type="text" automatic be 1..</p>
  
  <p>this example code :</p>
  
  <pre><code>&lt;input type="text" class="tags" ng-model="data.tes"&gt;
  &lt;br&gt;
  &lt;button value="1" class="phoneNumber" ng-model="data.tes"&gt;1&lt;/button&gt;
  </code></pre>
  
  <p>any suggestion for me?</p>
  
  <p>Thanks in advance.</p>