如何在Javascript中使用正则表达式用空格替换下划线

How can I replace underscores with spaces using a regex in Javascript?

如何用Javascript中的regex替换下划线?

var ZZZ = "This_is_my_name";

4 个解决方案

#1

If it is a JavaScript code, write this, to have transformed string in ZZZ2:

如果是JavaScript代码，写下来，在ZZZ2中转换字符串:

var ZZZ = "This_is_my_name";
var ZZZ2 = ZZZ.replace(/_/g, " ");

also, you can do it in less efficient, but more funky, way, without using regex:

同样，你可以用更低的效率，但更时髦的方式，不使用regex:

var ZZZ = "This_is_my_name";
var ZZZ2 = ZZZ.split("_").join(" ");

#2

Regular expressions are not a tool to replace texts inside strings but just something that can search for patterns inside strings. You need to provide a context of a programming language to have your solution.

正则表达式不是替代字符串中的文本的工具，而是可以搜索字符串中的模式的工具。您需要提供编程语言的上下文才能获得解决方案。

I can tell you that the regex _ will match the underscore but nothing more.

我可以告诉您，regex _将匹配下划线，但仅此而已。

For example in Groovy you would do something like:

例如，在Groovy中，您可以执行以下操作:

"This_is_my_name".replaceAll(/_/," ")
    ===> This is my name

but this is just language specific (replaceAll method)..

但这只是特定于语言的方法(replaceAll方法)。

#3

Replace "_" with " "

将"_"替换为" "

The actual implementation depends on your language.

实际的实现取决于您的语言。

In Perl it would be:

在Perl中，它将是:

s/_/ /g

But the truth is, if you are replacing a fixed string with something else, you don't need a regular expression, you can use your language/library's basic string replacement algorithms.

但事实是，如果你用别的东西替换一个固定的字符串，你不需要一个正则表达式，你可以使用你的语言/库的基本字符串替换算法。

Another possible Perl solution would be:

另一个可能的Perl解决方案是:

tr/_/ /

#4

var str1="my__st_ri_ng";
var str2=str1.replace(/_/g, ' ');

#1