Alert if selected option are already selected in other select option

1
votes

I need to alert if option is selected in other select option value. i disabled the option if selected but it can not insert into database because of disabled attribute. so i only want to alert.

<select class="input_slip_no form-control" name="slip_no[]" id="ID_2_slip_no" required="required">     
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>
<select class="input_slip_no form-control" name="slip_no[]" id="ID_3_slip_no" required="required">     
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>

<select class="input_slip_no form-control" name="slip_no[]" id="ID_4_slip_no" required="required">     
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>
<select class="input_slip_no form-control" name="slip_no[]" id="ID_5_slip_no" required="required">     
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>

This change function disabled the option if other select option is selected. When I change to alert it not working. How to only alert if selected in other select option.

$('.input_slip_no').on('change', function() {
  var selected_options = $('.input_slip_no').map(function(){
    return this.value
  }).get();

  $('.input_slip_no option').each(function(index) {
    $(this).prop('disabled', $.inArray($(this).val(), selected_options) != -1);
  });
});
2
javascriptjqueryhtmlselect
I suppose you need one select with multiple attribute. – u_mulder
what are you trying to alert on what event? – guradio
@guradio i want to alert this value already selected please select other option – Dev
replace $(this).attr('disabled',true); with $(this).val('');alert('already selected'); – Rajshekar Reddy
you can hide the other select option if the option is already selected on first option tag by using visiblity attribute. – Ambrish Pathak

2 Answers

3
votes

Here you go with the jQuery selector as below,

Note: I have added empty element as initial selected value since the same value has been selected in your sample above.

$('.input_slip_no').change(function(){
  
  var selected = $(this).val();
  if(selected) {
    var otherSelected = $('.input_slip_no').not($(this)).find('option[value="' + selected + '"]:selected');
    
    if(otherSelected.length > 0) {
      alert('Option is already selected');
      $(this).val('');
    }
  }

});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select class="input_slip_no form-control" name="slip_no[]" id="ID_2_slip_no" required="required">     
  <option value=""></option>    
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>
<select class="input_slip_no form-control" name="slip_no[]" id="ID_3_slip_no" required="required">         
  <option value=""></option>    
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>

<select class="input_slip_no form-control" name="slip_no[]" id="ID_4_slip_no" required="required">        
  <option value=""></option>     
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>
<select class="input_slip_no form-control" name="slip_no[]" id="ID_5_slip_no" required="required">     
  <option value=""></option>        
  <option value="SYS0001">SYS0001</option>
  <option value="SYS0002">SYS0002</option>
  <option value="SYS0003">SYS0003</option>
  <option value="SYS0004">SYS0004</option>
  <option value="SYS0005">SYS0005</option>
  <option value="SYS0006">SYS0006</option>
  <option value="SYS0007">SYS0007</option>
  <option value="SYS0008">SYS0008</option>
  <option value="SYS0009">SYS0009</option>
</select>
0
votes

Please have a look at this link: 

$('.ddControl').change(function(){
    for(var i=0;i<$('.ddControl').length;i++){
  debugger;
    if($(this).attr('id') != $($('.ddControl')[i]).attr('id'))
    {
        if($(this).val() == $($('.ddControl')[i]).val())
      {
        alert('Option is already selected');
      }
    }
  }
})

Demo