如何删除html特殊字符？

function removeSpecialChars(str) {
  return str.replace(/&[^;]+;/g, '');
}

const htmlString = "<p>这是一个包含特殊字符的HTML字符串</p>";
const removedString = removeSpecialChars(htmlString);
console.log(removedString);

import re

def remove_special_chars(html_str):
    return re.sub("&[^;]+;", "", html_str)

html_string = "<p>这是一个包含特殊字符的HTML字符串</p>"
removed_string = remove_special_chars(html_string)
print(removed_string)

function removeSpecialChars($str) {
  return preg_replace('/&[^;]+;/', '', $str);
}

$htmlString = "<p>这是一个包含特殊字符的HTML字符串</p>";
$removedString = removeSpecialChars($htmlString);
echo $removedString;