如何将变量x按ID从模板传递到我的视图？

Question

如何通过ID将变量x从模板传递到我的视图？ 我的模板

<button onclick="getLocation()">Try It</button>

<p id="demo" ></p>
<p id="demo1"></p>
<script>
 var x = document.getElementById("demo");
 var x1 = document.getElementById("demo1");
 function getLocation() {
 if (navigator.geolocation) {
  navigator.geolocation.getCurrentPosition(showPosition);
  } else {
 x.innerHTML = "Geolocation is not supported by this browser.";
 }
}

function showPosition(position) {
  x.innerHTML =  position.coords.latitude
 x1.innerHTML =  position.coords.longitude

}
</script>

我的观点：

def RegisterOrder(request,ln):
   user = request.user
   if request.method == 'GET':

    data = OrderRegister
    return render(request, 'reg.html', {'formreg': data,'ln':ln})
else:


    data = OrderRegister(request.POST)

    if data.is_valid():

        table = models.Order()

        table.table_num_id = data.cleaned_data['table_num']
        table.lan=ln
        table.user_id=user.id
        table.long_position=request.GET.get['demo']
        table.save()