如何从javascript var中删除反斜杠？ [英] How to remove backslash escaping from a javascript var?

问题描述

我有这个var

var x = "<div class=\\\"abcdef\\\">";

哪个是

<div class=\"abcdef\">

但是我需要

<div class="abcdef">

我如何unes​​cape这个var可以删除所有转义的字符？

How can I "unescape" this var to remove all escaping characters?

推荐答案

您可以通过正则表达式替换一个反斜杠后跟引号，而 String＃replace function：

You can replace a backslash followed by a quote with just a quote via a regular expression and the String#replace function:

var x = "<div class=\\\"abcdef\\\">";
x = x.replace(/\\"/g, '"');
document.body.appendChild(
  document.createTextNode("After: " + x)
);

请注意正则表达式只是一个反斜杠在文字中有两个，因为您必须使用反斜杠在正则表达式文字中转义反斜杠（就像字符串文字中一样）。

Note that the regex just looks for one backslash; there are two in the literal because you have to escape backslashes in regular expression literals with a backslash (just like in a string literal).

在正则表达式的末尾，g 告诉替换在整个字符串（全局）中工作;否则，它只会替换第一场比赛。

The g at the end of the regex tells replace to work throughout the string ("global"); otherwise, it would replace only the first match.

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