字符串中的JavaScript和正斜杠 [英] JavaScript and forward slashes in strings

问题描述

我们必须在JavaScript字符串中转义正斜杠的真正原因是什么，以及为什么我们必须在XHTML中转义字符串/无字符串。很多教程只是简单介绍了这个问题。

What is the real reason that we must escape a forward slash in a JavaScript string, and also why must we escape string/no string in XHTML. A lot of tutorials just brush over this issue.

推荐答案

我们必须在什么地方找到真正的理由。在JavaScript字符串中转义正斜杠

What is the real reason that we must escape a forward slash in a JavaScript string

在HTML 4文档中，序列< / 定义为包含CDATA的元素（如脚本）是一个结束标记并将结束该元素（如果它不是< / script> 。

In an HTML 4 document, the sequence </ inside an element defined as containing CDATA (such as script) is an end tag and will end the element (with an error if it is not </script>.

就JS而言 / 和 \ / 在字符串中是相同的。就HTML而言< / 启动结束标记但是< \ / 没有。

As far as JS is concerned / and \/ are identical inside a string. As far as HTML is concerned </ starts an end tag but <\/ does not.

，以及为什么我们必须在XHTML中转义字符串/无字符串。

, and also why must we escape string/no string in XHTML.

XHTML没有提供指定元素本质上包含CDATA的方法，因此您需要显式处理否则具有特殊含义的字符（< ，& 等）。包含它们包含带有CDATA标记的元素是实现此目的的最简单方法。

XHTML doesn't provide a method of specifying that an element intrinsically contains CDATA, so you need to explicitly handle characters which would otherwise have special meaning (<, &, etc). Wrapping them contains of the element with CDATA markers is the easiest way to achieve this.

这篇关于字符串中的JavaScript和正斜杠的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！