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Old 09-30-2022, 09:21 AM   #1
skil-phil
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Regex question
Hi,
I posted a thread a while ago and cannot find it
If this a duplicate I apologize.

I have been getting started with regex expressions using a tutorial I found on these forums.
Finding number sequences work fine.
Number and alpha give me a problem.
Trying to get a match for:
<body class="content" id="uiW9njI8qPGOt6Hp7wdrNu5">
with variable alpha and numerics.
Tried
<body class="content" id="[a-z][A-Z][0-9]">
<body class="content" id="[a-zA-Z0-9]">
<body class="content" id="\w">
None of witch found a match.
What am I missing?
Thanks
Phil
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Old 09-30-2022, 09:56 AM   #2
Tex2002ans
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Quote:
Originally Posted by skil-phil View Post
What am I missing?
Thanks
A '+' sign.

In Regex, + means "ONE OR MORE of the previous thing".
  • \w = any word or number character
  • \w+ = ONE OR MORE of any word or number character

Or:
  • [a-zA-Z0-9] = Look for a lowercase "a through z", capital "A through Z", or number "0 through 9".
  • [a-zA-Z0-9]+ = Look for ONE OR MORE of lowercase...

You also have other symbols/methods too:
  • \w* = ZERO OR MORE of...
  • \w? = ZERO OR ONE of...
  • \w{4} = EXACTLY 4 of...
  • \w{3,10} = Anywhere between 3 to 10 of...

- - -

Side Note: I'd highly recommend looking at some of my step-by-step breakdowns of regex over the years...

Here's a few of them:

I explain what each piece does, and many times, I even color-coordinate everything with colors to make it easier to understand which piece does what.

You may also want to type this into your favorite search engine:

Code:
 Tex2002ans regular expressions site:mobileread.com
 Tex2002ans regular expressions site:reddit.com
I've written hundreds of posts over the years about regex.
Last edited by Tex2002ans; 09-30-2022 at 10:06 AM.
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Old 09-30-2022, 10:21 AM   #3
enuddleyarbl
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Quote:
Originally Posted by skil-phil View Post
Hi,
I posted a thread a while ago and cannot find it
If this a duplicate I apologize.

I have been getting started with regex expressions using a tutorial I found on these forums.
Finding number sequences work fine.
Number and alpha give me a problem.
Trying to get a match for:
<body class="content" id="uiW9njI8qPGOt6Hp7wdrNu5">
with variable alpha and numerics.
Tried
<body class="content" id="[a-z][A-Z][0-9]">
<body class="content" id="[a-zA-Z0-9]">
<body class="content" id="\w">
None of witch found a match.
What am I missing?
Thanks
Phil
Since you're working through a tutorial, this might not be what you're looking for. But, my search for <body> tags with stuff in them is simply:
Code:
<body.+?>
If I were to look for something of the form you specified, then I'd try:
Code:
<body class=.+? id=.+?>
or, since the class seems fixed:
Code:
<body class="content" id=.+?>
EDIT: From:
https://regex101.com/
Quote:
. matches any character (except for line terminators)
+? matches the previous token between one and unlimited times, as few times as possible, expanding as needed (lazy)
Last edited by enuddleyarbl; 09-30-2022 at 10:37 AM.
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Old 09-30-2022, 10:44 AM   #4
skil-phil
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Quote:
Originally Posted by Tex2002ans View Post
A '+' sign.
In Regex, + means "ONE OR MORE of the previous thing".
+lots more
Thanks so much for clarifying this. Worked as you posted.
Will look at your other posts.
Phil
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Old 09-30-2022, 10:48 AM   #5
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Quote:
Originally Posted by enuddleyarbl View Post
Since you're working through a tutorial, this might not be what you're looking for.
Thanks for the info. Did get it working but alternative solutions are always welcome.
Phil
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