title: Only allow to drag and drop text and not typing in html input field
body: <p>I have an application that requires an input field. The user can drag and drop a piece of text(a link) on the input field but not type in anything inside the field. How can I achieve this? </p>
  
  <p>I tried using read-only and disabled attributes with the input but this totally does not allow there to be any kind of input to be entered in the field.</p>
  
  <p>Please suggest some way to achieve this. I want a box which can act like an input field and allow text to be dragged and dropped in it, but not allow the user to type in anything. I am attaching a picture with this, which shows the box that i wish to use as the input box.</p>
  
  <p><a href="https://i.stack.imgur.com/Dy4fq.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Dy4fq.jpg" alt="enter image description here"></a></p>
  
  <p>The html is coded as follows:</p>
  
  <pre><code>&lt;p&gt;
      &lt;label id="lbl_market" for="market"&gt;Select Your Country: &lt;/label&gt;
      &lt;select id="market"&gt;
          &lt;option id="SelectMarket" class="market_option" selected disabled&gt;Select Market (Domain)&lt;/option&gt;
      &lt;/select&gt;
  &lt;/p&gt;
  &lt;p&gt;
      &lt;label id="lbl_tr_id" for="tr_id"&gt;Enter Your Tracking ID: &lt;/label&gt;
      &lt;input id="tr_id" type="text" name="tr_id" placeholder="Tracking ID"&gt;
  &lt;/p&gt;
  &lt;p&gt;
      &lt;div id="lbl_link"&gt;Drop link here: &lt;/div&gt;
      &lt;input readonly id="link" type="link" name="link" value="+"&gt;
  &lt;/p&gt;
  </code></pre>