我看不到日历单击显示它的字形。单击文本文本框时只能看到它

Question

用于显示日期的脚本代码

$(function(){
  $('.input-daterange').datepicker({
    format: "MM-yyyy",
    autoclose: true,
    viewMode: "months", 
    minViewMode: "months",    
  });
});

div标签，无法通过单击glyphicon日历来显示

 <div class="form-group">
    <label for="pwd">Month</label>
    <div class="input-daterange input-group" id="datepicker">
        <input type="text" class="form-control lfd" 
            placeholder="From date" value="January 2019">
        <span class="input-group-addon input-group-text" style="cursor: pointer;">
            <i class="glyphicon glyphicon-calendar"></i>
        </span> 
     </div>    
 </div>