title: Select last three digits of input on focus
body: <p>Is it possible to automatically select the last three characters of an input field when the field receives focus.</p>
  
  <p>For example, the input field has the number "123456".  When the field receives focus, I want "456" to be selected so that I can type "789" and the input would then have the value "123789".</p>
  
  <p>I'm using ionic 3.</p>