如何在javascript中连接正则表达式?

this is not what i'm asking for:

这不是我想要的:

concatenate multiple regexes into one regex

将多个regexe连接到一个regex中

is there a way to append a regex into another one (in javascript language) ?

是否有方法将regex附加到另一个(用javascript语言)中?

the reason for doing so is to simplify code maintenance (e.g. if the included string is long or easier to maintain by a non-programmer).

这样做的原因是为了简化代码维护(例如，如果包含的字符串很长，或者非程序员更容易维护)。

in python, for example, i'd write something like:

举个例子，在python中，我会这样写:

regstr1 = 'dogs|cats|mice'
regstr_container = '^animal: (cows|sheep|%s|zebra)$' % regstr1
re.compile(regstr_container)

however in javascript the regular expression is not a string.

但是在javascript中，正则表达式不是字符串。

re = /^animal: (rami|shmulik|dudu)$/;

or am i missing something?

还是我漏掉了什么?

2 个解决方案

#1

You don't have to use the literal notation. You could instead create a new RegExp object.

你不需要用文字符号。您可以创建一个新的RegExp对象。

var myRegex = new RegExp("^animal: (rami|shmulik|dudu)$");

#2

var regstr1 = 'dogs|cats|mice',
regstr_container = '^animal: (cows|sheep|'+ regstr1 +'|zebra)$',
regex = RegExp(regstr_container);