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May 27, 2023 am 10:28 AM

HTML转义：让网页更安全稳定

HTML（HyperText Markup Language）是构建网页的基本语言，它通过标签和属性描述文本、图像、超链接等元素的呈现方式。然而，在HTML中使用某些特殊字符时，往往会导致显示或解析错误的问题。为了解决这些问题，HTML转义应运而生。

什么是HTML转义？

HTML转义指的是将HTML中的特殊字符转换为安全的字符实体，以防止浏览器将这些字符解析为标签或其他意义。比如，“

HTML 转义符

HTML转义符一般以&开头，以;结尾，包含一到多个字母或数字。这里是常见的HTML转义符及其代表的字符：

转义符	代表的字符
&	& （和号）

>	> （大于号）
"	" （双引号）
'	' （单引号）

HTML 转义实例

比如在HTML中要显示"Mickey & Minnie"，需要把&符号转义为&，所以正确的写法是：

Mickey & Minnie

同样地，要显示""，应该使用将其转义：

<html>

转义的应用场景

HTML中大量使用了一些特殊字符，像小于号（）、单引号（'）、双引号（"）和&符号等。如果这些特殊字符没有进行转义，浏览器会将它们解析为HTML标签或其他语言的处理指令，这就会破坏原本的网页结构，导致显示错误或还会诱发一些安全问题。为了确保网页能正确地呈现，而不会对安全稳定带来影响，发布内容时一定要及时做好HTML转义的处理。

结语

HTML转义是保障网站安全稳定的重要手段之一，可以有效地防止XSS攻击、SQL注入等安全问题的产生。在编写网页时，进行转义处理是必须的，不仅可以提高网页的可读性，而且可以保证网页的可靠性。尤其是在用户输入内容后，需要先对特殊字符进行转义，才能存储到数据库中，同时也要在输出到浏览器前进行转义，以免出现安全问题。

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