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使用 Django 模板，我正在尝试在 javascript 中添加倒计时。将脚本显式放入 HTML 中确实有效，但在加载时无效。我想我已经接近了，但我无法弄清楚缺少什么：/。

这是一段工作代码：

<!DOCTYPE html>

<head>
    {% load staticfiles %}
</head>

<body>
{% if remaining_time %}
    <script>
        function startTimer(duration, display) {
            var timer = duration;
            var end = setInterval(function () {
                minutes = parseInt(timer / 60, 10);
                seconds = parseInt(timer % 60, 10);

                minutes = minutes < 10 ? "0" + minutes : minutes;
                seconds = seconds < 10 ? "0" + seconds : seconds;

                display.textContent = minutes + ":" + seconds;

                if (--timer < 0) {
                    clearInterval(end);
                    document.form_submit_answer.submit()
                }
            }, 1000);
        }

        window.onload = function () {
            var allowed_time_seconds = "{{remaining_time | safe}}",
                display = document.querySelector('#time');
            startTimer(allowed_time_seconds, display);
        };
    </script>
{% endif %}

    {{ current_question.title }}
    <div>
        <form name="form_submit_answer" action="{% url 'assignment_completion' token current_question_num %}"
            method="post">
            {% csrf_token %}
            {{ form }}
            <div>
                {% if next_question %}
                <input type="submit" value="Send your answer and go to the next question">
                {% else %}
                <input type="submit" value="Send your answer and end the assignment">
                {% endif %}
            </div>
        </form>
    </div>

    <div>
        TOKEN : {{ token }}
    </div>

    {% if remaining_time %}
    <div>Time remaining : <span id="time">{{initial_remaining_time}}</span></div>
    {% endif %}
</body>

</html>

但是当我从 HTML 中删除脚本并将其放入/static/js/timer.js然后导入时<head>，它不再起作用，initial_remaining_time显示但它不会每秒递减。

这是我的一段代码，它不起作用：

<head>
    {% load staticfiles %}
    {% if remaining_time %}
    <script src="{ % static 'js/timer.js' % }"></script>
    {% endif %}
</head>

预期结果：显示初始时间，然后递减到 0，在 0 时发送表格！

实际上，当将 timer.js 放入 /static/js/timer.js 时，只显示初始时间，然后什么都没有发生，就好像从未加载和播放过 javascript。

Traceback : (nkFjLIDrya1BrWd2bqYnq7TC5bpGCRGW3HcDXa6cqYI is a token)

[18/Jul/2019 11:12:32] "GET /nkFjLIDrya1BrWd2bqYnq7TC5bpGCRGW3HcDXa6cqYI/2 HTTP/1.1" 200 1017
Not Found: /nkFjLIDrya1BrWd2bqYnq7TC5bpGCRGW3HcDXa6cqYI/{ % static 'js/timer.js' % }
[18/Jul/2019 11:12:32] "GET /nkFjLIDrya1BrWd2bqYnq7TC5bpGCRGW3HcDXa6cqYI/%7B%20%%20static%20'js/timer.js'%20%%20%7D HTTP/1.1" 404 2617
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1 回答 1

2

try this: <script src="{% static 'yourAppName/path/to/app.js' %}">

If it keeps telling you that it can't find that specific file, then you probably haven't correctly configured your settings.py to know where your static directory should be.

于 2019-07-18T11:26:55.633 回答