Javascript Regex multi-matching

Question

I have spent time here Regex101 and here RegExr but still can't figure out how to do the following:

Example String: "input_u_s13p_11_backup_person"

What is consistent in every string: "input_u_s13p_"

Before: input_u_s13p_11_backup_person
After:  u_backup_person

Before: input_u_s13p_6_a_little_thing
After:  u_a_little_thing

Before: input_u_s13p_10_name
After:  u_name

Before: input_u_s13p_6_next_process_1
After:  u_next_process_1

Basically, I need all "input_u_s13p_" ripped out, and the "??" followed by it too. ?? = 1 or 2 digit number

input_u_s13p_\d{1,2} is a match for what you are looking for, is that what you need? — sniperd
– sniperd, Commented Jun 20, 2017 at 13:07
@NiettheDarkAbsol var str = 'input_u_s13p_10_backup_person'; str = str.replace('input_u_s13p_', ''); str = str.replace(/[^_]*/, ''); str = 'u' + str; — Dave
– Dave, Commented Jun 20, 2017 at 13:08
@sniperd Yes, that's much better than what I had. Thank you, your answer was perfect. — Dave
– Dave, Commented Jun 20, 2017 at 13:10
cool! I'll throw that in as an answer and if you could accept it that would be great — sniperd
– sniperd, Commented Jun 20, 2017 at 13:29

sniperd · Accepted Answer · 2017-06-20 13:29:44Z

1

input_u_s13p_\d{1,2}

That should be the regex you are looking for. Nice and simple. The \d is numbers and the {1,2} means one or two of them

answered Jun 20, 2017 at 13:29

sniperd

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Mistalis · Accepted Answer · 2017-06-20 13:26:54Z

1

Can you try the following regex:

input_u_[a-z\d]+_\d{1,2}_

Explanation

input_u_ matches the characters input_u_ literally (case sensitive)
[\w\d]+_ every digit/character string followed by a _
\d{1,2}_ one or two digits followed by a _

var arr = ['input_u_s13p_10_backup_person', 'input_u_s13p_6_a_little_thing', 'input_u_s13p_10_name', 'input_u_s13p_6_next_process_1']; 

arr.forEach(function(str) {
    str = str.replace(/input_u_[\w\d]+_\d{1,2}_/g, ''); 
    str = 'u_' + str;
    console.log(str);
});

edited Jun 20, 2017 at 13:26

answered Jun 20, 2017 at 13:21

Mistalis

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Youcef LAIDANI · Accepted Answer · 2017-06-20 13:29:43Z

1

I think this regex can help you input_(.*?_).*\d_(.*) :

regex demo

answered Jun 20, 2017 at 13:29

Youcef LAIDANI

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1 Comment

Dave Over a year ago

Very, very nice. Thanks for the regex demo link too!

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