Javascript JS函数在Django模板中不工作

模板：

{% extends 'home.html' %}
{% load static %}
{% block title %}Customer{% endblock %}
<script src="{% static 'js/sign_up.js' %}"></script>

{% block content %}
    <form method="post">
    {% csrf_token %}
        {{ form }}
        Date of Birth:(dd/mm/yyyy)
        <label>
            <select id="day">
                <option value="1" onclick="day()">1</option>
            </select>
        </label>
        <label>
            <select id="month">
                <option value="1" onclick="month()">1</option>
            </select>
        </label>
        <label>
            <select id="year">
                <option value="1" onclick="year(">1</option>
            </select>
        </label>
        <button type="submit">Submit</button>
    </form>
{% endblock %}

{%extends'home.html%}
{%load static%}
{%block title%}客户{%endblock%}
{%block content%}
{%csrf_令牌%}
{{form}}
出生日期：（年月日）
1.
1.
1.
提交
{%endblock%}

JS文件

function day() {
    let dd = 1;
    for (dd = 1; dd <= 31; dd++) {
        document.getElementById("day")
        document.write("<option value=" + dd + ">" + dd + "</option>")
    }
}

function month() {
    let mm = 1;
    for (mm = 1; mm <= 12; mm++) {
        document.getElementById("month")
        document.write("<option value=" + mm + ">" + mm + "</option>")
    }
}

function year() {
    let yy = 1950;
    for (yy = 1950; yy <= 2020; yy++) {
        document.getElementById("year")
        document.write("<option value=" + mm + ">" + mm + "</option>")
    }}

功能日（）{
设dd=1；
对于（dd=1；dd）您是否在html模板中导入JS文件？是的，我甚至在base.html和customer template中导入您是否在浏览器控制台或404/403等“网络”中看到任何错误消息浏览器devtools的选项卡？devtools未能加载SourceMap:无法加载的内容：HTTP错误：状态代码404，net:：ERR\u HTTP\u RESPONSE\u code\u failure如何修复告诉我