我无法更改标记，因为它是由我的CMS生成的.
因此，我需要当前的标记:
<details class="js-form-wrapper>
<summary></summary>
<div></div>
<div></div>
<table class="responsive"></table>
<div class="js-form-type-managed-file"></div>
</details>
要使用JQuery变成这样，请执行以下操作:
<details class="js-form-wrapper>
<summary></summary>
<div></div>
<div></div>
<div class="my-wrapper">
<table class="responsive"></table>
<div class="js-form-type-managed-file"></div>
</div>
</details>
您可以使用.wrapAll()并调用多个元素，因为它们不在一个父标记下
<details class="js-form-wrapper">
<summary>summ</summary>
<div>div 1</div>
<div>div 2</div>
<table class="responsive"></table>
<div class="js-form-type-managed-file">child</div>
</details>
$(".js-form-wrapper table, .js-form-type-managed-file").wrapAll('<div class="my-wrapper"></div>');
$(document).ready(function() {
$(".js-form-wrapper table, .js-form-type-managed-file").wrapAll('<div class="my-wrapper"></div>');
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<details class="js-form-wrapper">
<summary>summary</summary>
<div>div 1</div>
<div>div 2</div>
<table class="responsive"></table>
<div class="js-form-type-managed-file">inspect here to see wrap</div>
</details>