【发布时间】:2021-02-08 20:54:18
【问题描述】:
好吧,我在这里创建评论系统。如果已经至少有一条评论,它工作正常,但如果没有评论并尝试创建一个,它会向我显示一个错误 Paused on exception TypeError: document.getElementById(...) is null 。不知道怎么解决。
html
<div id="post_id" post-id="{{post.pk}}" post-slug="{{post.slug}}">
{% if node.level < 3 %}
<button class='btn btn-success' onclick="myFunction({{node.id}})">Reply</button>
{% endif %}
</div>
jquery,ajax 函数
$(document).on('click', '#newcomment, #newcommentinner', function (e) {
e.preventDefault();
var button = $(this).attr("value");
var post_id = document.getElementById('post_id').getAttribute('post-id'); #Here is an error appearing.
var post_slug = document.getElementById('post_id').getAttribute('post-slug');
console.log(post_id,'postid')
var placement = "commentform"
if (button == "newcommentform") {
var placement = "newcommentform"
}
$.ajax({
type: 'POST',
url: '{% url "posts:addcomment" %}',
data: $("#" + button).serialize() + "&post_id="+post_id + "&post_slug="+post_slug,
cache: false,
error: console.log('post_id' + post_id),
success: function (json) {
console.log(json)
$('<div id="" class="my-2 p-2" style="border: 1px solid grey"> \
<div class="d-flex justify-content-between">By ' + json['user'] + '<div></div>Posted: Just now!</div> \
<div>' + json['result2'] + '</div> \
<hr> \
</div>').insertBefore('#' + placement);
$('.commentform').trigger("reset");
formExit()
},
error: function (xhr, errmsg, err) {
}
});
})
如果需要更多代码而不是在评论会话中告诉我。我会用这些信息更新我的问题。
【问题讨论】:
标签: javascript html django ajax django-templates