<div class="row">
  <div class="col-sm-7">
    <div class="input-group mb-3">
      {% if filters %}
      {% for f in filters %}
      {% if "date" in f.name %}
      <input type="text" name={{ f.name }} class="form-control pick-date"
        placeholder="&#xf073;&nbsp {{ f.placeholder }}" autocomplete="off">
      {% else %}
      <input type="text" name={{ f.name }} class="form-control"
        placeholder={{ f.placeholder }} autocomplete="off">
      {% endif %}
      {% endfor %}
      <input type="hidden" name="source" value={{ source }}>
      {% if 'hidden' in request.GET %}
      <input type="hidden" name="hidden" value="1">
      {% endif %}
      <button class="btn btn-primary" type="submit"  id="chaxun">查 询</button>
      {% endif %}
    </div>
  </div>
</div>

<script>
$('.pick-date').datepicker({
  format: "yyyy-mm-dd",
  maxViewMode: 1,
  language: "zh-CN",
  defaultDate : new Date()
});

$("input:text", document.forms[0]).each(function(){
    $(this).val(getUrlParam(this.name))
});

function getUrlParam(name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象
var r = window.location.search.substr(1).match(reg);  //匹配目标参数
if (r != null)
    return decodeURI(r[2]);
return null; //返回参数值
 }

</script>