get multi selection value from lookup field using java script

Question

I nee d get mutiple value from a lookup field and i need to validate it,if i get more than one value i need to give a message and if get one value i need to give another message.i have try something but it not work.

function getbankdetails()
{     
  debugger;
  var arr = $('#R3413775').val();
  
  if(arr[0]!="" && arr[1] !="")
  {
    alert("first"+arr[0]+" "+arr[1]);
  }
  else
  { 
    alert("sasa");
  }  
  
}

actually it is mistake but it is not real problem,i change it and check again it not work if i use arr[0] and arr[1] — sampath kumara
– sampath kumara, Commented Oct 25, 2018 at 4:10
can u share your output? I have given an answer if you share your exact output and expected output it will be clear — saketh
– saketh, Commented Oct 25, 2018 at 4:15
@saketh according to the above code when i select one value alert show " first value undefined" if i select two values alert show in twice first time show " first value undefine" and second time show "first value value" — sampath kumara
– sampath kumara, Commented Oct 25, 2018 at 4:23

saketh · Accepted Answer · 2018-10-25 05:54:23Z

1

This may work (Javascript)

function getbankdetails()
{     
  debugger;
  var arr = Array.from(document.getElementById("R3413775").selectedOptions).map((ele) => ele.value)      
  if(arr[0] && arr[1] && arr.length == 2)
  {
     alert("first"+arr[0]+" "+arr[1]);
  }
  else
  { 
     alert("sasa");
  }      
}

edited Oct 25, 2018 at 5:54

answered Oct 25, 2018 at 5:42

saketh

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Comments

gavgrif · Accepted Answer · 2018-10-25 04:21:29Z

0

You can simply get the elements as the array and either console log the "sasa" string or the list of selected items as a string (by concatenating the array with commas.

$('#R3413775').change(function(){
  getbankdetails();
})

function getbankdetails() {     
  var arr = $('#R3413775').val();
  arr.length == 1 
   ? console.log("sasa")
   : console.log(arr.join(', '))
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="R3413775" multiple>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="opel" >Opel</option>
  <option value="audi">Audi</option>
</select>

edited Oct 25, 2018 at 4:21

answered Oct 25, 2018 at 4:16

gavgrif

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