Does the JavaScript onclick event not work on <select> 's?

Question

For some reason the code below it is not working correctly. Unless I\'m being quite stupid with my JavaScript I can\'t see what\'s going wrong besides the onclick events not

Answer 1

DEMO

var dropdown = document.getElementById('drop_down');

dropdown.onchange = function() {
  var selected = dropdown.options[dropdown.selectedIndex].value;

  switch(selected) {
    case 'other':
      document.getElementById('other').value = "";
      document.getElementById('other').style.display = 'block'; 
      document.getElementById('otherBR').style.display = 'block';
      break;
    default:
      document.getElementById('other').style.display = 'none'; 
      document.getElementById('otherBR').style.display = 'none';
      break;
  }
}

Answer 2

Add this function to your JS:

function showHideOther(){
    if (document.getElementById('drop_down').value == 'other') {
         showOther();   
    } else {
         hideOther();   
    }
}

And change your select element like this:

<select name="" id="drop_down" onchange="showHideOther();">
        <option value="choose">Please choose</option>
        <option value="Allure">Allure</option>
        <option value="Elle">Elle</option>
        <option value="In-Style">In-Style</option>
        <option value="other">Other</option>
</select>

function showHideOther() {
  if (document.getElementById('drop_down').value == 'other') {
    showOther();
  } else {
    hideOther();
  }
}

function showOther() {
  document.getElementById('other').value = "";
  document.getElementById('other').style.display = 'block';
  document.getElementById('otherBR').style.display = 'block';
}

function hideOther() {
  document.getElementById('other').style.display = 'none';
  document.getElementById('otherBR').style.display = 'none';
}

#other {
  display: none;
}
#otherBr {
  display: none;
}

<select name="" id="drop_down" onchange="showHideOther();">
  <option value="choose">Please choose</option>
  <option value="Allure">Allure</option>
  <option value="Elle">Elle</option>
  <option value="In-Style">In-Style</option>
  <option value="other">Other</option>
</select>
<input type="text" name="fields_where" id="other" placeholder="Other" />
<br id="otherBR" />

Answer 3

just add these function to your code:

$('#drop_down').on('change', function(){
    ($(this).val() == 'other') ? showOther() : hideOther();
});

se here: http://jsfiddle.net/gLML3/7/

Answer 4

An answer with JS only, not jQuery:

onclick event in option tag is just recognized by Firefox. If you need a solution that works on all browsers such as IE or Chrome you can use onchange event on your "Select" element.

HTML :

<select name="" id="drop_down" onchange="showHideOther(this.value);">
    <option value="choose" ">Please choose</option>
    <option value="Allure">Allure</option>
    <option value="Elle" >Elle</option>
    <option value="In-Style" >In-Style</option>
    <option value="other" id="otherOption">Other</option>
</select>

JS defined in the html head section as script:

function showHideOther(value){
    alert(value);
    if (value==='other'){
        document.getElementById('other').value = "";
        document.getElementById('other').style.display = 'block'; 
        document.getElementById('otherBR').style.display = 'block';
    }
    else{
            document.getElementById('other').style.display = 'none'; 
            document.getElementById('otherBR').style.display = 'none';
    }
}

JSFiddle sample working fine: http://jsfiddle.net/amontellano/gLML3/14/

I hope it helps.