jQuery show/hide a div based on select value

Question

I have a select list with values \'all\' and \'custom\'. On select with value \'custom\' a div with class \'resources\' should appear, and if the value is \'all\' it should

Answer 1

That could be done with `toggle()` as a shorthand :

$('#privileges').change(function() {
  $('.resources').toggle($(this).val() == 'custom');
});

If you want to toggle the display in the page load you could trigger the same change() event, like :

$('#privileges').change(function() {
  $('.resources').toggle($(this).val() == 'custom');
}).change();

$('#privileges').change(function() {
  $('.resources').toggle($(this).val() == 'custom');
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <label>Privileges:</label>
  <select name="privileges" id="privileges">
    <option id="all" value="all">All</option>
    <option id="custom" value="custom">Custom</option>
  </select>
</div>
<div class="resources" style=" display: none;">resources</div>

Answer 2

You can clean up the HTML by dropping the onClick and removing the IDs from the options.

HTML:

<div>
    <label>Privileges:</label>
    <select name="privileges" id="privileges">
        <option value="all">All</option>
        <option value="custom">Custom</option>
    </select>
</div>
<div class="resources" style=" display: none;">resources</div> 

And your JavaScript could simply do this:

$('#privileges').on('change', function() {
        if($(this).val() === 'all') {
            $('.resources').hide();
        } else {
            $('.resources').show();
        }
 });

Answer 3

You will want to add the event handler:

$("#privileges").change(craateUserJsObject.ShowPrivileges);

Then, within your ShowPrivileges funciton:

var val = $("#privileges").val();
if(val == "whatever")
    //do something
else
    //do something

Answer 4

You need to use val method:

var Privileges = jQuery('#privileges');
var select = this.value;
Privileges.change(function () {
    if ($(this).val() == 'custom') {
        $('.resources').show();
    }
    else $('.resources').hide(); // hide div if value is not "custom"
});

http://jsfiddle.net/RWUdb/

Answer 5

  $("#privileges").change(function(){
     var select=  $(this).val();
       if(select=='custom'){
          //some code
         }
    }); 

or

  var select=$('#privileges :selected').val()
    if(select=='custom'){
    //some code
  }

Answer 6

Privileges.on('change',function(){
    if($(this).val()=='custom'){
        $('.resources').show();
    }else{
        $('.resources').hide();
    }
})