document.createComment All In One

document.createComment

document.createComment("auth")
<!--auth-->

MDN

XML / HTML

const docu = new DOMParser().parseFromString("<xml></xml>", "application/xml");
const comment = docu.createComment("This is a not-so-secret comment in your document");

docu.querySelector("xml").appendChild(comment);

console.log(new XMLSerializer().serializeToString(docu));
// <xml><!--This is a not-so-secret comment in your document--></xml>

https://developer.mozilla.org/en-US/docs/Web/API/Document/createComment

Comment

let comment = new Comment("Test");

console.log(`comment =`, comment)
// comment = <!--Test-->

https://mdn1.moz.one/en-US/docs/Web/API/Comment/Comment?language=en-US

https://developer.mozilla.org/en-US/docs/Web/API/Document/Comment

https://developer.mozilla.org/en-US/docs/Web/API/Comment/Comment

https://dom.spec.whatwg.org/#ref-for-dom-comment-comment①

demos

const removeElement = (el) => {
    // 在绑定元素上存储父级元素
    el._parentNode = el.parentNode
    // 在绑定元素上存储一个注释节点
    el._placeholderNode = document.createComment("auth")
    // 使用注释节点来占位
    el.parentNode?.replaceChild(el._placeholderNode, el)
}

https://juejin.cn/post/7209648356530896953

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标签：comment,el,createComment,https,document,Comment
From： https://www.cnblogs.com/xgqfrms/p/17549188.html