CODEWITHSUNDEEP
javascriptjqueryhtmldomhtml-select
jay thakur
jay thakur

Reputation: 151

How to deselect values from multiselect option using jQuery?

I have a multiselect option. If i select Mahesh & Dilip both, I want to show a pop up message that you can not select both at a time. If I click Ok on pop up then I want to deselect ONLY these two. How to do this? Here is my code:

<select multiple="" name="playerNames" id="playerNames" class=""> 
   <option value="">-- Select --</option> 
   <option value="4">Rakesh</option> 
   <option value="5">Suresh</option> 
   <option value="2">Mahesh</option> 
   <option value="6">Dilip</option> 
   <option value="1">Ramesh</option> 
   <option value="3">Dinesh</option> 
</select>

<script type="text/javascript">
   $('#playerNames').on('change',function(){  
   var selected = $('#playerNames:selected').map(function(){return $(this).val();}).get();
   alert(selected.length);   
   if(jQuery.inArray("Mahesh", selected) !== -1){
     var maheshSelected = true;
   }

   if(jQuery.inArray("Dilip", selected) !== -1){
      var dilipSelected = true;
   }

   if(maheshSelected == true && dilipSelected == true){
      var alertMessage = "You cannot choose Mahesh + Dilip. Please select either Mahesh or Dilip.";
    alert(alertMessage);
    if (confirm(alertMessage)) {

    //code to deselect  both

    }
  }

});

Upvotes: 1

Views: 1178

Answers (1)

Michał Perłakowski
Michał Perłakowski

Reputation: 92669

You can select the options using $('option:contains(Mahesh), option:contains(Dilip)') and deselect them using .prop('selected', false):

$('#playerNames').on('change', function(){  
  const selected = $('#playerNames :selected').map(function() {return $(this).text()}).get()
  if (selected.includes('Mahesh') && selected.includes('Dilip')) {
    alert('You cannot choose Mahesh + Dilip. Please select either Mahesh or Dilip.')
    $('option:contains(Mahesh), option:contains(Dilip)').prop('selected', false)
  }
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select multiple="" name="playerNames" id="playerNames" class=""> 
  <option value="">-- Select --</option> 
  <option value="4">Rakesh</option> 
  <option value="5">Suresh</option> 
  <option value="2">Mahesh</option> 
  <option value="6">Dilip</option> 
  <option value="1">Ramesh</option> 
  <option value="3">Dinesh</option> 
</select>

Here's a cross-browser solution (works on Internet Explorer 9+):

$('#playerNames').on('change', function(){  
  var selected = $('#playerNames :selected').map(function() {return $(this).text()}).get()
  if (selected.indexOf('Mahesh') > -1 && selected.indexOf('Dilip') > -1) {
    alert('You cannot choose Mahesh + Dilip. Please select either Mahesh or Dilip.')
    $('option:contains(Mahesh), option:contains(Dilip)').prop('selected', false)
  }
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select multiple="" name="playerNames" id="playerNames" class=""> 
  <option value="">-- Select --</option> 
  <option value="4">Rakesh</option> 
  <option value="5">Suresh</option> 
  <option value="2">Mahesh</option> 
  <option value="6">Dilip</option> 
  <option value="1">Ramesh</option> 
  <option value="3">Dinesh</option> 
</select>

Upvotes: 1

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