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SImmySImmy 

please help on this ! how to pass values to apex controller ?

<td>

<select  data-style="" class="selectpicker form-control" name="multipleSelected" id="multipleSelected" multiple="multiple">
                                                                                        
                          <apex:repeat value="{!MedicalAllergies}" var="itm">                                                   
                                 <option  value="{!itm.label}">{!itm.label} </option>
                           </apex:repeat>
  </select>   

 </td>

 
Soyab HussainSoyab Hussain
Hi SImmy,

Use this code this will help you.

Apex Class: 
public class SelectList {
    public List<String> MedicalAllergies {get;set;}
    public String selectedItem {get;set;}
    public SelectList() {
        MedicalAllergies = new List<String>{'first', 'secong'};
    }
    public void onSelectListChange() {
        SYstem.debug('selectedItem' + selectedItem);
    }
}
Visuaforce Page: 
<apex:page controller="SelectList" >
    <head>
        <script>
        function passValue()  {
            var e = document.getElementById("multipleSelected");
            var strUser = e.options[e.selectedIndex].value;
            onSelectListChange(strUser);
        }
        </script>
    </head>
    <apex:form >
        <apex:actionFunction  name="onSelectListChange" action="{!onSelectListChange}" reRender="none" >
            <apex:param name="param" value="" assignTo="{!selectedItem}" />
        </apex:actionFunction>
        
        <td> 
            <select onchange="passValue(); return false;" data-style="" class="selectpicker form-control" name="multipleSelected" id="multipleSelected">
                <apex:repeat value="{!MedicalAllergies}" var="itm">                                                   
                    <option  value="{!itm}">{!itm} </option>
                </apex:repeat>
            </select>   
            
        </td>
    </apex:form>
</apex:page>


Regards,
Soyab
SImmySImmy
Hi soyab, Thank you so much for your reply but could u please let me know if I want to call the JavaScript function after I've selected 2-3values, then how can I call?
Soyab HussainSoyab Hussain
Hi SImmy,

Use this code this will help you.

Apex Class: 
public class SelectList {
    public List<String> MedicalAllergies {get;set;}
    public String selectedItem {get;set;}
    public SelectList() {
        MedicalAllergies = new List<String>{'first', 'secong'};
    }
    public void onSelectListChange() {
        SYstem.debug('selectedItem' + selectedItem);
    }
}
  
<apex:page controller="SelectList" >
    <head>
        <script> 
        function passValue() {
            var select1 = document.getElementById("multipleSelected");
            var selected1 = [];
            for (var i = 0; i < select1.length; i++) {
                if (select1.options[i].selected) selected1.push(select1.options[i].value);
            }
            onSelectListChange(JSON.stringify(selected1));
            console.log(selected1);
        }
        </script>
    </head>
    <apex:form >
        <apex:actionFunction name="onSelectListChange" action="{!onSelectListChange}" reRender="none" >
            <apex:param name="param" value="" assignTo="{!selectedItem}" />
        </apex:actionFunction>
        
        <td> 
            <select multiple="true" onchange="passValue(); return false;" data-style="" class="selectpicker form-control" name="multipleSelected" id="multipleSelected">
                <apex:repeat value="{!MedicalAllergies}" var="itm">                                                   
                    <option  value="{!itm}">{!itm} </option>
                </apex:repeat>
            </select>   
            
        </td>
    </apex:form>
</apex:page>
If you found it useful please appreciate my efforts and mark it as the best answer.

LinkedIn:  https://www.linkedin.com/in/soyab-hussain-b380b1194/

Regards,
Soyab