javascript,如何在将 DOMparser 与 text/html 一起使用时删除 <html><head><body> 元素
javascript, how to remove the <html><head><body> elements when using DOMparser with text/html
密码
var txt = '<div id="hi">fe</div><div id="h2">fe</div><div id="hj">fe</div>'
var parser = new DOMParser();
var temp_node = parser.parseFromString(txt, "text/html").documentElement;
console.log(temp_node)
此代码生成完整的 html 文档,其中包括
<html><head></head><body>
<div id="hi">fe</div>
<div id="h2">fe</div>
<div id="hj">fe</div>
</body></html>
如果我只想要 <div id="hi">fe</div><div id="h2">fe</div><div id="hj">fe</div>
部分怎么办?我该怎么做?
而且,如果我想追加所有节点,有没有没有循环的方法?
parentNode.appendChile(temp_node) // add the entire code
parentNode.appendChile(temp_node.firstElementChild.nextElementSibling) // add the parent <body> and the other layers inside
parentNode.appendChild(temp_node.firstElementChild.nextElementSibling.childNodes) // doesn't do the trick, it complains about not being a "node", I guess I'd need an "appendChilds" function that allows to add many nodes at once
*如果 parentNode 是 <div id="parent">
<div id="parent">
<div id="hi">fe</div>
<div id="h2">fe</div>
<div id="hj">fe</div>
</div>
但是我明白了
<div id="parent">
<body>
<div id="hi">fe</div>
<div id="h2">fe</div>
<div id="hj">fe</div>
</body>
</div>
使用childNodes
console.log(temp_node.childNodes[1].childNodes[0]);
或querySelector
console.log(temp_node.querySelector("#hi"));
更新
或innerHTML
console.log(temp_node.querySelector("body").innerHTML);
属性documentElement
returns如下:
Returns the Element that is a direct child of the document. For HTML
documents, this is normally the HTMLHtmlElement object representing
the document's <html>
element.
- MDN
Document 上还存在其他属性,.body
就是其中之一。使用 .body
(而不是 querySelector
)可以让您快速直接访问 HTML 内容的 body
,然后您可以使用 .innerHTML
获取其内容:
parser.parseFromString(txt, "text/html").body
查看工作示例:
const txt = '<div id="hi">fe</div><div id="h2">fe</div><div id="hj">fe</div>'
const parser = new DOMParser();
const temp_node = parser.parseFromString(txt, "text/html").body;
console.log(temp_node.innerHTML);
密码
var txt = '<div id="hi">fe</div><div id="h2">fe</div><div id="hj">fe</div>'
var parser = new DOMParser();
var temp_node = parser.parseFromString(txt, "text/html").documentElement;
console.log(temp_node)
此代码生成完整的 html 文档,其中包括
<html><head></head><body>
<div id="hi">fe</div>
<div id="h2">fe</div>
<div id="hj">fe</div>
</body></html>
如果我只想要 <div id="hi">fe</div><div id="h2">fe</div><div id="hj">fe</div>
部分怎么办?我该怎么做?
而且,如果我想追加所有节点,有没有没有循环的方法?
parentNode.appendChile(temp_node) // add the entire code
parentNode.appendChile(temp_node.firstElementChild.nextElementSibling) // add the parent <body> and the other layers inside
parentNode.appendChild(temp_node.firstElementChild.nextElementSibling.childNodes) // doesn't do the trick, it complains about not being a "node", I guess I'd need an "appendChilds" function that allows to add many nodes at once
*如果 parentNode 是 <div id="parent">
<div id="parent">
<div id="hi">fe</div>
<div id="h2">fe</div>
<div id="hj">fe</div>
</div>
但是我明白了
<div id="parent">
<body>
<div id="hi">fe</div>
<div id="h2">fe</div>
<div id="hj">fe</div>
</body>
</div>
使用childNodes
console.log(temp_node.childNodes[1].childNodes[0]);
或querySelector
console.log(temp_node.querySelector("#hi"));
更新
或innerHTML
console.log(temp_node.querySelector("body").innerHTML);
属性documentElement
returns如下:
Returns the Element that is a direct child of the document. For HTML documents, this is normally the HTMLHtmlElement object representing the document's
<html>
element.- MDN
Document 上还存在其他属性,.body
就是其中之一。使用 .body
(而不是 querySelector
)可以让您快速直接访问 HTML 内容的 body
,然后您可以使用 .innerHTML
获取其内容:
parser.parseFromString(txt, "text/html").body
查看工作示例:
const txt = '<div id="hi">fe</div><div id="h2">fe</div><div id="hj">fe</div>'
const parser = new DOMParser();
const temp_node = parser.parseFromString(txt, "text/html").body;
console.log(temp_node.innerHTML);