Django-HTML:我如何才能允许用户添加额外的输入域(确保它们不是必需的)？类似于+按钮之类的东西

from django import forms
from django.forms import formset_factory

# 创建单个输入域的表单类
class MyForm(forms.Form):
    field = forms.CharField()

# 创建表单集合类
MyFormSet = formset_factory(MyForm, extra=1)

# 视图函数
def my_view(request):
    if request.method == 'POST':
        formset = MyFormSet(request.POST)
        if formset.is_valid():
            formset.save()
            # 处理表单数据
    else:
        formset = MyFormSet()
    
    return render(request, 'my_template.html', {'formset': formset})

<form method="post">
    {% csrf_token %}
    {{ formset.management_form }}
    {% for form in formset %}
        {{ form }}
    {% endfor %}
    <button type="submit">提交</button>
</form>