Hi every one i am trying to select an option in a page written ing angularjs via javascript

i digged a few but i couldnt find any solition

any example will be appreciated thanks.

 <div class="form-item" data-select2-id="4">
    <select id="selectv8" data-placeholder="Lütfen Seçiniz" data-placeholderinput="Lütfen Seçiniz" class="form-control select2-hidden-accessible ng-pristine ng-untouched ng-empty ng-invalid ng-invalid-required" required="" ng-model="OtpTelefonNumarasi" ng-options="y as y.Description + ' - ' + y.MaskedGsm for (x, y) in GsmList" ng-change="SmsGonderKontrol()" data-select2-id="selectv8" tabindex="-1" aria-hidden="true">
        <option label="Telefon Numarası Seçiniz" data-select2-id="2" value=" " class="" selected="selected"></option>
        <option label="5**1***515" value="object:3" data-select2-id="7">- 5**1***515</option>
        <option label="5**3***549" value="object:4" data-select2-id="8"> - 5**3***549</option>
        <option label="5**0***233" value="object:5" data-select2-id="9"> - 5**0***233</option>
        <option label="5**5***385" value="object:6" data-select2-id="10"> - 5**5***385</option>
    </select><span class="select2 select2-container select2-container--default select2-container--below select2-container--focus" dir="ltr" data-select2-id="1" style="width: 560px;">
        <span class="selection"><span class="select2-selection select2-selection--single" role="combobox" aria-haspopup="true" aria-expanded="false" tabindex="0" aria-disabled="false" aria-labelledby="select2-selectv8-container">
            <span class="select2-selection__rendered" id="select2-selectv8-container" role="textbox" aria-readonly="true"><span class="select2-selection__placeholder">Lütfen Seçiniz</span>

            </span>
            <span class="select2-selection__arrow" role="presentation"><b role="presentation"></b></span></span></span><span class="dropdown-wrapper" aria-hidden="true"></span></span>
</div>



<ul class="select2-results__options" role="listbox" id="select2-selectv8-results" aria-expanded="true" aria-hidden="false">
    <li class="select2-results__option" id="select2-selectv8-result-diki-object:3" role="option" aria-selected="false" data-select2-id="select2-selectv8-result-diki-object:3">5**1***515</li>
    <li class="select2-results__option select2-results__option--highlighted" id="select2-selectv8-result-1y2z-object:4" role="option" aria-selected="false" data-select2-id="select2-selectv8-result-1y2z-object:4">5**3***549</li>
    <li class="select2-results__option" id="select2-selectv8-result-e12p-object:5" role="option" aria-selected="false" data-select2-id="select2-selectv8-result-e12p-object:5">5**0***233</li>
    <li class="select2-results__option" id="select2-selectv8-result-ff0q-object:6" role="option" aria-selected="false" data-select2-id="select2-selectv8-result-ff0q-object:6">5**5***385</li>
</ul>