I have a link look like:
var str = "http://example.com/ep-1-29838.html";
I want to get only 29838
I tried with:
str = str.replace(^([-])\/([.html])$\w+, "");
I don't have many experiences with Regex. Thanks.
3 Answers
Match the last digits followed by a dot and file extension:
var str = "http://example.com/ep-1-29838.html";
console.log(
str.match(/\d+(?=\.\w+$)/)
);
answered Jun 11, 2018 at 8:38
CertainPerformance
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1 Comment
Ave
Your solution very smart!
This could be an approach:
"http://example.com/ep-1-29838.html".match(/(\d+)\.html$/)
It basically means "match and store in a group one or more digit (0-9) that are followed by .html at the end of the string".
The value returned is an array of two element, you're interested in the second one.
1 Comment
Ave
Cool solution but get more step to get.
You don't have to use regex if it's this rigid - more readable to me like this:
var str = "http://example.com/ep-1-29838.html";
str = str.split('-') /* split the string on hyphen */
.pop() /* get last of generated array */
.replace('.html', ''); /* now remove the file extension */
console.log(str);3 Comments
CertainPerformance
Isn't it generally the other way around? It's nice to use regex if you can, but if you can't, then you have to resort to language-specific string manipulation
Ave
I like method
match to resolve my problem. It special. Your solution is general in any case. Thanks.
StudioTime
@CertainPerformance I guess all devs work in different ways - if there isn't s substantial performance loss (I haven't checked in this case but I doubt it), then readability wins every time for me.
.htmlyou can try this regex([0-9]+)\.html