无法读取null引导程序崩溃的属性'querySelectorAll' [英] Cannot read property 'querySelectorAll' of null bootstrap collapse

问题描述

我正在编写引导程序崩溃的PHP代码，并报错无法读取null的属性'querySelectorAll'.我花了很多时间解决这个简单的问题.如果我没有php就可以正常工作而不会出错 错误是:

I am writing php code for bootstrap collapse and taking error Cannot read property 'querySelectorAll' of null. I spend really a lot of time to this simple problem. If I put without php that is working really norm without error Error is:

Uncaught TypeError: Cannot read property 'querySelectorAll' of null
at a.t._getParent (collapse.js:300)
at new a (collapse.js:88)
at HTMLDivElement.<anonymous> (collapse.js:345)
at Function.each (jquery.js:368)
at jQuery.fn.init.each (jquery.js:157)
at jQuery.fn.init.a._jQueryInterface [as collapse] (collapse.js:331)
at HTMLDivElement.<anonymous> (collapse.js:378)
at Function.each (jquery.js:368)
at jQuery.fn.init.each (jquery.js:157)
at HTMLButtonElement.<anonymous> (collapse.js:374)

那是我的php代码

<div id="info-content" class="accordion" id="accordionExample">
                  <?
                    $faqs = get_field('faqs');
                    foreach ($faqs as $key => $value):
                  ?>
                  <div class="card">
                    <div class="card-header" id="headingOne<?=$key;?>">
                      <h5 class="mb-0">
                        <button class="btn btn-link" type="button" data-toggle="collapse" data-target="#collapseOne<?=$key;?>" aria-expanded="true" aria-controls="collapseOne<?=$key;?>">
                          <?=$value['question'];?>
                        </button>
                      </h5>
                      <i class="fas fa-plus"></i>
                    </div>
                    <div id="collapseOne<?=$key;?>" class="collapse <?if($key==0):?>show<?endif;?>" aria-labelledby="headingOne<?=$key;?>" data-parent="#accordionExample">
                      <div class="card-body">
                        <?=$value['answer'];?>
                      </div>
                    </div>
                  </div>
                  <?endforeach;?>
                </div>

推荐答案

这是由于Bootstrap 4.1.1或2更改为4.1.3所致.

This is due to a change in Bootstrap 4.1.1 or 2 to 4.1.3.

当您使用data-parent="selector"时，会出现相同的错误，而它应该是data-parent="#selectorId"或data-parent=".selectorClassName".

Same error happens when you use data-parent="selector" while it should be data-parent="#selectorId" or data-parent=".selectorClassName".

该错误曾经无声地消失，但现在显示此控制台错误.

This error used to void silently but now it displays this console error.

这篇关于无法读取null引导程序崩溃的属性'querySelectorAll'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！