How can I create a textbox if a certain item is selected in a drop-down list?

Question

I have a drop-down list that contains the following values:

<option>Aramex</option>
<option>DHL</option>
<option>FedEx</option>
<option>Other</option>

When the user select Other, I want to show a text box. How can I do that?

I'm using Laravel 4.2

Answer 1

here is the correct fix:

<script type="text/javascript">
    function showfield(name){
      if(name=='Other')document.getElementById('div1').innerHTML='Other: <input type="text" name="other" />';
      else document.getElementById('div1').innerHTML='';
    }
    </script>

    <select name="travel_arriveVia" id="travel_arriveVia" onchange="showfield(this.options[this.selectedIndex].value)">
    <option selected="selected">Please select ...</option>
    <option value="DHL">DHL</option>
    <option value="Aramex">Aramex</option>
    <option value="FedEx">FedEx</option>
    <option value="Other">Other</option>
    </select>
    <div id="div1"></div>