I wish to translate it to portuguese if there is no problem to you @aykutkardas

i just havea question, on localization folder, i'm thinking in put the json as 'brazilian-portuguese' to diferentiate the portuguese from portugal one its that ok?

Step Number: 32
Step Name: steps.groupReference.title
Language: en-us

"To avoid typing (\d{3}) again at the end of our expression, reference this group by typing \1." This is true for the 444-0-444 that is given but not true in general. The reference \1 is not reference to a regular expression but to an exact text that this regular expression matched. For example, if we have 444-0-111, then (\d{3})-(\d)-\d{3} will match it, but (\d{3})-(\d)-\1 will not.

Step Number: 20
Step Name: steps.quantifier.title
Language: en-us

No problem but a comment.
It may be more accurate to have the title be just "Braces - 1"
From typography:
( ) are called parentheses
[ ] are called brackets
{ } are called braces
reference, https://practicaltypography.com/parentheses-brackets-and-braces.html

Step Number: 32
Step Name: steps.groupReference.title
Language: en-us

What is the problem you are experiencing?

Should use this config: eslint-config-airbnb

Hi Aykut,

I have got an idea about language, languages, and contents should be route-based. This is important for accessibility and SEO.

Source: https://nextjs.org/docs/advanced-features/i18n-routing

Congrats and thanks for this project! 🥳

Sample link:
https://github.com/aykutkardas/regexlearn.com/issues/new?title={title}&body={body}

Step Number: 29
Step Name: examples.quantifierRange.title
Language: en-us

User Agent:
Mozilla/5.0 (Windows NT 10.0, Win64, x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

What is the problem you are experiencing?

The question says: Write the expression using curly braces {} to select the numbers from 0 to 9 in the text that is at least between 1 and 4.

But it should say: Write the expression using curly braces {} to select the numbers from 0 to 9 in the text that are repeated between 1 and 4 times side by side.

Thank you for the website anyway. It's great.

Step Number: 34
Step Name: steps.pipeCharacter.title
Language: en-us

What is the problem you are experiencing?

A better solution would be: (C|c|r)at instead of the given solution [(C|c)at|rat]

(C|c|r)at would better explain the concept of pipe operator

Step Number: 32
Step Name: steps.groupReference.title
Language: en-us

What is the problem you are experiencing?

The description includes (\d{3}) instead of ([0-9]{3})
The \d digit matching has not been shown before so it might confuse some people especially because the starting regex also uses the [0-9] to match digits: ([0-9]{3})-([0-9])-

please add chinese language, thanks

Many languages have standard libraries with their own set of regex rules.

Please, support selecting the regex flavor, at least for the most common programming languages (JS, Python, Perl)
For reference: Compare Regular Expressions Flavors

And put notice on which flavor is used by defaut (currently.)

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?
Entered expressions (?<=$)\d+ doesn't allow me to continue to the next question despite matching the answer.

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?

Problem Given:

Product Code: 1064 Price: $5

For example, we want to select the price value in the text. Therefore, to select only the number values that precede $

The price succeeds the "$".

I think it was meant to be "preceded by the $"

A precedes B — A happened first.

A preceded by B — B happened first.

Same type of error is found in 48th question. Please fix

RegExes in the data should be tested individually with the help of a loop.

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?

it doesn't accept the right answer.

Typo in multiple places

It looks like we need the maximum width for the input. Otherwise, the image will be distorted when it exceeds the area.

Issue to add Spanish (neutral) translations 🙂

Step Number: 34
Step Name: steps.pipeCharacter.title
Language: en-us

What is the problem you are experiencing?
I think this is a better solution:(C|c|r)at

Step Number: 36
Step Name: steps.caret.title
Language: en-us

What is the problem you are experiencing?

The description is:

We were using \d to find numbers. To find only numbers at the beginning of a line, prefix this expression with the ^ sign.

But we did not use \d before we used [0-9]

Related PR: #84

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?
The correct regex pattern doesn’t pass in this step.

Step Number: 11
Step Name: examples.characterSet.title
Language: en-us

User Agent: Chrome/96.0.4664.45

What is the problem you are experiencing?
If I click 'show answer' and the go to next question, the next answer is visible. Please hide next answer.

Should be "Asterisk", not "Astekriks"

In Alternation dropdown:

Alternation works like a simple “OR”.

Step Number: 4
Step Name: steps.characterSet.title
Language: en-us

User Agent:
Mozilla/5.0 (Macintosh, Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

What is the problem you are experiencing?

bur is not selected (although it's not the right answer to this question)

Step Number: 27
Step Name: examples.quantifier.title
Language: en-us

What is the problem you are experiencing?
I think the wording is confusing. You could say "4 digit numbers"
or "numbers with a length of 4" instead of "4 of the numbers"

A 404 page needs to be designed and coded.

Step Number: 13
Step Name: examples.range.title
Language: en-us

User Agent:
Mozilla/5.0 (Macintosh, Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.55 Safari/537.36

What is the problem you are experiencing?

Every page should have TwitterCard meta tags.

Step Number: 4
Step Name: steps.characterSet.title
Language: en-us

What is the problem you are experiencing?

aieou should also be accepted

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?
The correct regex pattern doesn’t pass as correct in this step

Step Number: 18
Step Name: steps.plusCharacter.title
Language: en-us

When I hit enter after entering the right answer I get to the previous step. I’m on an iPhone (iOS 15.1) with the Brave Browser

We need a landing header component at the top of the page. I will handle it.

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?

This also applies to 48:
The text block does not highlight what the regex is supposed to be selecting. Using Safari 15.1 on MacBook M1

P.S. Awesome tool, thank you for making it!

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?

I have entered the following expression, which is not accepted as a correct solution. However the same solution is provided when using Option+h to get a hint.

'(?<=$)\d+'

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?
Can't proceed beyond Positive Look Behind Section even after entering the correct RegEx pattern, which I had to get from the help link:

I am using Safari on MacBook Pro M1 but don't know if issue is the browser or not.

Thank you!

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?
Explanation says we want the numbers that "precede" the $. The example actually wants the numbers that "succeed" or "come after" the $, or number values preceded by $

Answers in the learning steps assume an exact match. But more than one answer should be considered correct.

So the 'regex' attribute in the data must be an array.

Current step information should be kept in localStorage so that progress is not lost

This site must be available as an app. That's why adding PWA support is important.

Step Number: 0
Step Name: steps.starter.title
Language: en-us

What is the problem you are experiencing?

After writing first regex /OK/g , its not moving to next , it just showing red border line on test box as wrong answer

Step Number: 27
Step Name: examples.quantifier.title
Language: en-us

What is the problem you are experiencing?
In the example, {n,} was legal syntax. However, when using it during this practice problem m, it won’t accept this syntax and instead only accepts {n}?

Step Number: 47
Step Name: steps.positiveLookbehind.title
Language: en-us

What is the problem you are experiencing?

Even if the answer from the show answer button is entered, it doesnt match.
Browser: Safari 15

We need a better layout for responsive.

The current lang and the method that will change the language should be stored in a provider.

Step Number: 7
Step Name: steps.rangeNumber.title
Language: en-us

What is the problem you are experiencing?
Current title of step 7 is Number Range[a-z], but I think it should be Number Range[0-9] instead.

Step Number: 32
Step Name: steps.groupReference.title
Language: en-us

What is the problem you are experiencing?

The instructions refer to (\d{3}) but this doesn't appear in the regex at all, nor has \d been referenced in any earlier steps.