[jquery] Get the value of a dropdown in jQuery

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$('.leave_response').on('change', function() {_x000D_
    var responseId = $(this).val();_x000D_
    console.log(responseId);_x000D_
});
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<td>_x000D_
    <select class="leave_response" name="leave">_x000D_
        <option>1</option>_x000D_
        <option>2</option>_x000D_
        <option>3</option>_x000D_
        <option>4</option>_x000D_
    </select>_x000D_
</td>
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