JQuery Select2 - How to select all options

Question

I\'m using jQuery select2 multi select dropdown. I need to select all options in a dropdown from code. Basically there is a Select All checkbox on which this functionality h

Answer 1

using Select 2 DEMO

$("#e1").select2();
$("#checkbox").click(function(){
    if($("#checkbox").is(':checked') ){
        $("#e1 > option").prop("selected","selected");// Select All Options
        $("#e1").trigger("change");// Trigger change to select 2
    }else{
        $("#e1 > option").removeAttr("selected");
        $("#e1").trigger("change");// Trigger change to select 2
     }
});

$("#button").click(function(){
       alert($("#e1").val());
});

        Alabama
        Amalapuram
        Anakapalli
        Akkayapalem
        Wyoming
    
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You need code As shown in DEMO2 for Simple Select

$("#checkbox").click(function(){
    if($("#checkbox").is(':checked') ){
        $("select > option").prop("selected","selected");
    }else{
        $("select > option").removeAttr("selected");
     }
});

$("#button").click(function(){
       alert($("select").val());
});


  Volvo
  Saab
  Opel
  Audi
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