javascript 如何从 html 字符串中获取 head 和 body 标签作为字符串?
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How to get head and body tags as a string from html string?
提问by eric.itzhak
Hey i have an html string i'm having trouble getting the tags from.
嘿,我有一个 html 字符串,我无法从中获取标签。
I have tried alot of stuff, here are some :
我尝试了很多东西,这里有一些:
var head = $("head",$(htmlString)).html();
var body = $("body",$(htmlString)).html();
var head = $("head",htmlString).html();
var body = $("body",htmlString).html();
var head = $("head",$(htmlString).html()).html();
var body = $("body",$(htmlString).html()).html();
var head = htmlString.match(/<head[^>]*>([^<]+)<\/head>/);
var body = htmlString.match(/<body[^>]*>([^<]+)<\/body>/);
var head = jQuery('<div/>').append(htmlString).find('head').html();
var body = jQuery('<div/>').append(htmlString).find('body').html();
Any many other tries besides that. All of this return "undefined" or "" or jquery object when i try loging it to console.
除此之外还有许多其他尝试。当我尝试将其登录到控制台时,所有这些都返回“未定义”或“”或 jquery 对象。
Could anyone tell me how can i get the body and head tags as a string?
谁能告诉我如何将 body 和 head 标签作为字符串获取?
Prefered with jQuery/JS and not regex
首选 jQuery/JS 而不是正则表达式
回答by RGA
Try Below Code:
试试下面的代码:
var head = htmlString.match(/<head[^>]*>[\s\S]*<\/head>/gi);
var body = htmlString.match(/<body[^>]*>[\s\S]*<\/body>/gi);
回答by Asad Saeeduddin
Since you have well formed HTML, you can create a document and select nodes from it:
由于您拥有格式良好的 HTML,您可以创建一个文档并从中选择节点:
var doc = (new DOMParser()).parseFromString(htmlstring,"text/html");
console.log(doc.head.outerHTML);
console.log(doc.body.outerHTML);
Here is a demonstration: http://jsfiddle.net/X3Uq2/
这是一个演示:http: //jsfiddle.net/X3Uq2/
In Chrome, you can't use a "text/html"
content type, so you have to make an XML document and use getElementsByTagName
:
在 Chrome 中,您不能使用"text/html"
内容类型,因此您必须制作一个 XML 文档并使用getElementsByTagName
:
var s = new XMLSerializer();
var doc = (new DOMParser()).parseFromString(data,"text/xml");
console.log(s.serializeToString(doc.getElementsByTagName("head")[0]));
console.log(s.serializeToString(doc.getElementsByTagName("body")[0]));
回答by Gencebay D.
You can use javascript slicemethod this way:
您可以这样使用 javascript slice方法:
var html = '<!DOCTYPE html>'+
'<html>'+
'<head>' +
'<meta name="viewport" content="width=device-width" /> '+
'<title></title>' +
'</head>' +
'<body>Some Text!</body>' +
'</html>'
var bEnd, bStart;
bStart = html.indexOf("<body");
bEnd = html.indexOf("</body");
var body = html.slice(bStart, bEnd);
console.log(body);
回答by rahul
may be this can help you
也许这可以帮助你
var head = jQuery('<div/>').append(htmlString).find('head').html();
var body = jQuery('<div/>').append(htmlString).find('body').html();
回答by MrKukac
It's really simple:
这真的很简单:
JQuery: $(head)
Native js: document.head
JQuery:$(head)
原生 js:document.head
If you wanted to get html of this tag:
如果您想获取此标签的 html:
In JQuery: $(head).html();
Native js: document.head.innerHtml
在 JQuery 中: $(head).html();
原生js:document.head.innerHtml
You find nice JQuery refernece here: http://visualjquery.com
您可以在这里找到不错的 JQuery 参考:http://visualjquery.com