Javascript 替换正则表达式通配符
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Javascript replace regex wildcard
提问by Kristian
I have a string which I need to run a replace.
我有一个需要运行替换的字符串。
string = replace('/blogs/1/2/all-blogs/','');
The values 1, 2 and all-blogs can change. Is it possible to make them wildcards?
值 1、2 和 all-blogs 可以更改。是否可以使它们成为通配符?
Thanks in advance,
提前致谢,
Regards
问候
回答by T.J. Crowder
You can use .*
as a placeholder for "zero or more of any character here" or .+
for "one or more of any character here". I'm not 100% sure exactly what you're trying to do, but for instance:
您可以.*
用作“此处有零个或多个任何字符”或.+
“此处有一个或多个任何字符”的占位符。我不是 100% 确定你想要做什么,但例如:
var str = "/blogs/1/2/all-blogs/";
str = str.replace(/\/blogs\/.+\/.+\/.+\//, '');
alert(str); // Alerts "", the string is now blank
But if there's more after or before it:
但如果在它之后或之前还有更多:
str = "foo/blogs/1/2/all-blogs/bar";
str = str.replace(/\/blogs\/.+\/.+\/.+\//, '');
alert(str); // Alerts "foobar"
Note that in both of the above, only the firstmatch will be replaced. If you wanted to replace allmatches, add a g
like this:
请注意,在以上两个中,只会替换第一个匹配项。如果要替换所有匹配项,请添加g
如下内容:
str = str.replace(/\/blogs\/.+\/.+\/.+\//g, '');
// ^-- here
You can read up on JavaScript's regular expressions on MDC.
回答by ThiefMaster
js> 'www.google.de/blogs/1/2/all-blogs'.replace(/\/blogs\/[^\/]+\/[^\/]+\/[^\/]+\/?/, '');
www.google.de
回答by Klemen Slavi?
What about just splitting the string at slashes and just replacing the values?
仅在斜杠处拆分字符串并仅替换值怎么样?
var myURL = '/blogs/1/2/all-blogs/', fragments, newURL;
fragments = myURL.split('/');
fragments[1] = 3;
fragments[2] = 8;
fragments[3] = 'some-specific-blog';
newURL = fragments.join('/');
That should return:
那应该返回:
'/blogs/3/8/some-specific-blog'
回答by Keng
Try this
尝试这个
(/.+){4}
escape as appropriate
适当逃脱