如何提取无HTML标签的纯文本？附目标HTML代码示例

嘿，我来帮你搞定从这段HTML里提取纯文本的事儿！针对你给出的代码，我给你几个实用的方案：

1. 手动快速提取（适合简单HTML） #

你这段HTML结构很简单，没有复杂嵌套，直接删掉所有<>包裹的标签就行，最终得到的纯文本是：

CPSC 353 - Introduction to Computer Security (3)
Security goals, security systems, access controls, networks and security, integrity, cryptography fundamentals, authentication. Attacks: software, network, website; management considerations, security standards in government and industry; security issues in requirements, architecture, design, implementation, testing, operation, maintenance, acquisition,

2. Python自动化提取（适合批量/复杂场景） #

如果以后要处理大量或者结构复杂的HTML，用BeautifulSoup库绝对省心，代码示例如下：

from bs4 import BeautifulSoup

# 你的目标HTML内容
html_content = '<div class="ajaxcourseindentfix"> <h3>CPSC 353 - Introduction to Computer Security (3) </h3> <hr>Security goals, security systems, access controls, networks and security, integrity, cryptography fundamentals, authentication. Attacks: software, network, website; management considerations, security standards in government and industry; security issues in requirements, architecture, design, implementation, testing, operation, maintenance, acquisition,'

# 解析HTML结构
soup = BeautifulSoup(html_content, 'html.parser')

# 提取纯文本并整理格式
plain_text = soup.get_text(strip=True, separator=' ')
print(plain_text)

运行后会输出去掉多余空格、格式整齐的纯文本，strip=True会清理掉冗余的换行和空格，separator=' '用空格分隔不同标签里的内容。

3. JavaScript提取（前端/Node.js场景） #

如果是在浏览器或者Node.js环境里处理，可以用原生的DOMParser来实现：

const htmlContent = '<div class="ajaxcourseindentfix"> <h3>CPSC 353 - Introduction to Computer Security (3) </h3> <hr>Security goals, security systems, access controls, networks and security, integrity, cryptography fundamentals, authentication. Attacks: software, network, website; management considerations, security standards in government and industry; security issues in requirements, architecture, design, implementation, testing, operation, maintenance, acquisition,';

const parser = new DOMParser();
const doc = parser.parseFromString(htmlContent, 'text/html');
const plainText = doc.body.textContent.trim();
console.log(plainText);

这个方法会自动忽略所有HTML标签，直接提取页面中的所有可见文本，非常适合前端场景。

内容的提问来源于stack exchange，提问作者miserable