How to populate a select list in a Django Template dynamically using Javascript?

I've recently been learning Django and HTML but I'm completely new to JavaScript. I'm having a go at creating a database display page with a filter menu at the side. For this page I have the following code:

Model.py:

class Part(models.Model):
    PartID = models.AutoField(primary_key=True, unique=True)
    SiteID = models.ForeignKey('Site', on_delete=models.CASCADE, null=True)
    Comment = models.CharField(max_length=255, blank=True)
    Subtype = models.ForeignKey('Subtype', on_delete=models.CASCADE, null=True)
    Location = models.CharField(max_length=255, blank=True)
    ConnectedTo= models.ManyToManyField('self', null=True)
    BatchNo = models.CharField(max_length=32, blank=False, null=True)
    SerialNo = models.CharField(max_length=32,blank=True)
    Manufacturer = models.CharField(max_length=32, blank=False, null=True)
    Length = models.FloatField(blank=True, null=True)
    InspectionPeriod = models.IntegerField(blank=True, null=True)
    LastInspected = models.DateField(blank=True, null=True)
    InspectionDue = models.CharField(max_length=255, blank=True)

View.py:

@login_required(login_url='/accounts/login/')
def sites(request, site):

    siteselected = site
    warnings = 0
    expired = 0
    good = 0
    PartsAtSite = Part.objects.filter(SiteID = siteselected)
    TypesList = Type.objects.values_list('TypeName', flat=True).distinct()
    InspectionList = Part.objects.values_list('InspectionPeriod', flat=True).distinct()
    LengthList = Part.objects.values_list('Length', flat=True).distinct()
    LocationList = Part.objects.values_list('Location', flat=True).distinct()
    ManufacturerList = Part.objects.values_list('Manufacturer', flat=True).distinct()

    for part in PartsAtSite:
        if part.LastInspected == None:
            part.InspectionDue = "Yes"
            expired = expired + 1

        else:
            Deadline = part.LastInspected + timedelta(days=part.InspectionPeriod)

        if datetime.now().date() > Deadline:
            part.InspectionDue = "Yes"
            expired = expired + 1

        elif datetime.now().date() > (Deadline - timedelta(days=30)):
            part.InspectionDue = "<30 Days"
            warnings = warnings + 1
        else:
            part.InspectionDue = "No"
            good = good + 1
    part.save()

    context = {
        'TypesList': TypesList,
        'InspectionList': InspectionList,
        'LengthList': LengthList,
        'LocationList': LocationList,
        'ManufacturerList': ManufacturerList,
        'PartsAtSite': PartsAtSite,
        'expired': expired,
        'warnings': warnings,
        'good': good,
        'SiteName': Site.objects.get(SiteID = siteselected).SiteName,
        'SiteNo': Site.objects.get(SiteID = siteselected).SiteID,
    }

template = loader.get_template('myproject/sites.html')
return HttpResponse(template.render(context, request))

And the HTML for my filter div:

<div id="filterdiv" class="dark">
    <center><h3>Filters</h3></center>
    <br>

    <center>Type</center>
    <select name="Types">
        <option>All</option>
        
    </select>
    <br>
    <br>

    <center>Inspection Period</center>
    <select name="Inspection Period">
        <option>All</option>
        
    </select>
    <br>
    <br>

    <center>Length</center>
    <select name="Length">
        <option>All</option>
        
    </select>
    <br>
    <br>

    <center>Location</center>
    <select name="Location">
        <option>All</option>
        
    </select>
    <br>
    <br>

    <center>Manufacturer</center>
    <select name="Manufacturer">
        <option>All</option>
        
    </select>
    <br>
    <br>
    <button>Apply Filter (TODO)</button>
    <button>Reset Filters (TODO)</button>
</div>

I am able to fill the lists just fine, but I want to be able to change it so that when I open the Type drop down box after selecting a Manufacturer, then I only get offered a list of Types from that Manufacturer.

Thanks.

from How to populate a select list in a Django Template dynamically using Javascript?