Regex no spaces example

Regex no spaces example. So to match a single space using this I have to use [[:space:]] Which is really strange. matches a period rather than a range of characters \s matches whitespace (spaces and tabs) Apr 10, 2013 · I am seeking help with a JavaScript RegEx for user names. Case sensitive. , Md. Whether you're looking to refine your coding skills or streamline your data processing tasks, this regex Python cheat sheet covers essential patterns, functions, and tips to enhance your programming workflow. I have tried using: /^\d+$/. $ matches the end of the string, so if there's anything after the comma and space then the match will Jun 27, 2016 · If you're using Perl or PCRE, you have the option of using the \h shorthand for horizontal whitespace, which appears to include the single-byte space, double-byte space, and tab, among others. Examples of incorrect code for this rule: /*eslint no-regex-spaces: "error"*/ var re = /foo bar/; var re = new RegExp("foo bar"); Examples of correct code for this rule: May 3, 2024 · Regular expressions (regex) in Python are indispensable for anyone who needs to manage, search, or manipulate text efficiently. Following are the two variants of the split () method in Java: 1. That’s the problem with the standard Java regex library. Jul 15, 2012 · The backtracking in a regex occurs because the match gets re-computed over and over trying to find the one that matches the most data. Example /helloworld #hello this is a comment/ If you need to use a space, you can use \ to match spaces. Public String [] split ( String regex, int limit) An array of strings is computed by splitting the given string. The start of string you can do : ^[ \t]+, and for end : [ \t]+$ (tab and spaces) ETA: By the way, you regex [\S+], i Sep 1, 2021 · This post explores the Google Sheets REGEX formulas with a series of examples to illustrate how they work. I am trying to match a password with "no spaces or no symbols" in javascript regex. If u want to exclude empty string ^[\d\w]+$. Not sure how to do this. So we have some work to do! Remove Digits and Underscores Jan 8, 2024 · 2. The ^ means 'the beginning of the string'. /^\d*$/. Can someone help please? Your expression reads as "match a single non-alphanumeric character or match anything followed by whitespace. compile("\\s\\s"); matcher = whitespace. Dec 3, 2011 · Need a regular expression to validate username which: should allow trailing spaces but not spaces in between characters. ^[a-zA-Z ]+$. use [\s\S] (match spaces and non-spaces) instead. lang. Using the knowledge that we have gained so far about regular expressions, let us now look at two final string examples that contain both letters and numbers. Mar 8, 2012 · For some languages where space in the regex isn't ignored you can just put the space in directly: [a-zA-Z_0-9 ] will also work. bashrc. Numbers 0 - 9. The first one is totally pointless, \s\s+ means, an \s followed by one or more \s+, which can be reduced to a single \s+, the second example is more accurate because we only want to replace double spaces, not newlines, the third is more optimized because it only applies to examples with 2+ spaces. The \ (backslash) in the . , looking for ' ' will replace only the ASCII 32 blank space. The "extends": "eslint:recommended" property in a configuration file enables this rule. To see if such lines exist, you can use this simple regex (see online demo ): ^ | $. regex applies a regular expression to a string and returns the matching substrings. Moreover, the java. I want to prevent user of entering white space. If you want to match anything after a word, stop, and not only at the start of the line, you may use: \bstop. It will keep doing this till it finds the end of the string ( $ ). [ Character set. bash uses the system's regexp library to match those regular expressions, but even on systems (like recent GNU ones) where the regexps have a \S operator, that won't work because in: [[ x = \S ]] Feb 19, 2016 · 18. The rest can be any letters, any numbers, hyphen, dot, underscore and spaces. NET, Rust. When mode=sed, the given sed expression used to replace or substitute characters is applied to the value of the chosen field. These work to prevent special characters and letters, but do nothing about the spaces. If you want to match zero or any number of spaces, replace the ? with * (eg: <space>*) If by "space" you actually mean "any whitespace This flag will ignore whitespace in your regular expression. For example (no space)ABC 123 450(no space) <-- Pass (space)ABC 123 450(no space) <--Fail (no space)ABC(space)(space)EFG(no space) <--Fail Dec 22, 2023 · In the presented example, the first scenario utilizes the regex \s+ to match one or more whitespace characters. would be a bit more sophisticated. The regex equivalent is ^. replace('\u00A0',' '). The rex command matches the value of the specified field against the unanchored regular expression and extracts the named groups into fields of the corresponding names. String class also has inbuilt regex support that we commonly use in our code. replace("\\s+". Validation includes: Name not allow numbers. NET regular expressions, and probably a lot of other languages as well. Disallows multiple spaces in regular expression literals. {0,7} - matches if password has between 0 to 7 Sep 18, 2021 · 5. Feb 27, 2014 · And this does not match if the string has a space at the end. How can I do this? Dec 30, 2015 · This RegEx taken from the referenced CodeProject article will validate all Social Security numbers according to all the rules - requires dashes as separators. 2. /^[0-9]+$/. It’s better to use only one space and then specify how many spaces are expected, such as: var re = /foo {3}bar/; In the actual regular expression, you must use an actual space character. answered May 7, 2012 at 13:00. 7-15 characters max (alphanumeric) cannot contain special characters. May 6, 2016 · This replaces raw string \s+, which is the problem. Combining the three cases above, we get the. *\b - word followed by a line. 1. , matches a comma followed by a space. zero-or-one-space is represented as a single space followed by a question mark ( <space>? ). Apr 29, 2013 · Example user input phone number like this: +jfalkjfkl saj f62 81 7876 asdadad30 asasda36. Detailed match information will be displayed here automatically. Save this answer. at the moment with my current regex ^[\+\sa-zA-Z]+ it can select the part +jfalkjfkl saj f. With the Ultimate Suite installed, using regular expressions in Excel is as simple as these two steps: On the Ablebits Data tab, in the Text group, click Regex Tools. trim() There are three non-breaking whitespace characters that are excluded from the Character. util. It can also be used to replace text, regex define a search pattern One of the more error-prone things you can do with a regular expression is to use more than one space, such as: var re = /foo bar/; 1. el if. not if y. For example I have. The input string, " "(three spaces), successfully triggers the pattern, and as a result, the boolean variable whitespaceMatcher1 is set to true. bashrc file. This approach can be used to automate this (the following exemplary solution is in python, although obviously it can be ported to any language):. " Instead of the . Show activity on this post. The extended flag also allows comments in your regex. To validate a field with a Regex pattern, click the Must match pattern check box. Explanation: ^ matches the start of the string. [c 1 c 2 c 3]. Using ignorecase w/ (?i) Find a-z. If there are spaces, it will fail. The $ means 'this is the end of the string'. However, it will only match on input with a length of 1. Breaking it down: ^ : start of string [ : beginning of character group a-z : any lowercase letter A-Z : any uppercase letter 0-9 : any digit _ : underscore ] : end of character group * : zero or more of the given characters $ : end of string Apr 8, 2011 · 1. Using the regex \s, we can identify the spaces between the words. answered Oct 1, 2013 at 16:31. g: 62(select the space here)81, 81(select the space Jan 8, 2024 · Thanks to the handy replaceAll() method in the String class, we can easily do string substitution with regular expressions. It doesn’t work with Java’s own character set! You have to JNI over to ICU’s to get anything that works properly — by which I mean, as a bare minimum, complies with the Level 1 requirements for basic Unicode functionality which are spelled out UTS#18 Unicode Regular Expressions. The length has to be between 3 and 25 (inclusive) So here is what I found Regex: /^[a-z][\s\w. Which breaks down as delimiter ( /) followed by a space () followed by another space one or more times ( +) followed by the end delimiter ( / in my example, but is language specific). The Java API for regular expressions states that \s will match whitespace. Nov 22, 2012 · 2. In a few articles online I've come across a shorthand [[:space:]], but this does not seem to work. this group can be repeated 0 or more times. And also please tell me what is the regex symbol for whitespace and non-whitespace. L. Aug 6, 2018 · 0. On the Regex Tools pane, do the following: Select the source data. . So the regex \\s\\s should match two spaces. The /s _italic_means ANY ONE space/non-space character. Breakdown of Regex. RegEx Demo. What you want is only select only digits with infinity amount. Mar 9, 2023 · How to use Regex in Excel. then output will be like this: 628178763036. Absolutely. So the solution is \d+. The pattern \S + can be employed to capture the three fruits separated by varying amounts of spaces. In this regular expression, it’s very hard to tell how many spaces are intended to be matched. For example, if you write an expression like /hello world/x, it will match helloworld, but not hello world. In this short tutorial, we’ll have a look at the difference between the two regular expressions through examples. \S - Matches any non-white-space character. Regular expression tester with syntax highlighting, PHP / PCRE & JS Support, contextual help, cheat sheet, reference, and searchable community patterns. No leading or trailing space {A-Z0-0} Allow only maximum 1 space in between word. Aug 30, 2016 · If you are looking for a way to validate white spaces or empty spaces in your Angular 2 input fields, you can find some useful answers and examples on this webpage. Matching Spaces: Given a string: I love chocolate. Jul 10, 2013 · This regex will match all unicode letters and spaces, which may be more than you need, so if you just need English / basic Roman letters, the first regex will be simpler and faster to execute. The bottom line is that you have to use 2 strings to handle cases where Load frm is at the beginning like so: Apr 7, 2022 · Grep Regex Example. / +/. Feb 6, 2014 · You'll need to anchor the regex at the start and end of the string: expression="^[A-Za-z][A-Za-z0-9]*$". I think the simplest is to use a regex that matches two or more spaces. matcher(modLine); while (matcher. In those languages, you can use a character class such as [\s\S] to match any character. Same with spaces, instead of dashes. However, the code below allows spaces. Examples of Whitespace Character Use. Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. Aug 1, 2023 · Some practical examples of using regex are batch file renaming, parsing logs, validating forms, making mass edits in a codebase, and recursive search. However, there are millions more whose names will fail. echo a b cX | sed -r "s/(a\sb[[:space:]]c[^[:space:]])/Result: \1/" Result: a b cX first space I match with \s; second space I match alternatively with [[:space:]] the X I match with "all but no space Mar 20, 2012 · If you use spaces, you need the /C: option to pass the the literal string(s) to the regex /R option. From that link: "JavaScript and VBScript do not have an option to make the dot match line break characters. Oct 9, 2017 · 2. My current regex works, but won't be able to test whether the user has written consecutive spaces. *$|. egrep (or at least the version I'm using) does not seem to support this pattern. No, it doesn't. Run the following command to test how grep regex works: grep if . Nothing else should be allowed. Thanks. Total including space is 35 character . Dec 1, 2017 · ^ asserts that the regular expression must match at the beginning of the subject [] is a character class - any character that matches inside this expression is allowed; A-Z allows a range of uppercase characters; a-z allows a range of lowercase characters. The --fix option on the command line can automatically fix some of the problems reported by this rule. [A-Za-z]* matches 0 or more letters (case-insensitive) -- replace * with + to require 1 or more letters. To use regular expressions in Java, we don’t need any special setup. Oct 2, 2019 · When you create a text question, along with word/character limits, you can validate for Regex pattern matching. must contain at least one letter,may contain letters and numbers. For inputs with a length greater than or equal to 1, you need a + following the character class: Feb 15, 2014 · This result can be translated to : "one or more digits ( \d+) followed by zero or more blank spaces ( \s* ), one or more times ( ()+ ), anywhere in the input ". Finally, this will validate numbers without spaces or dashes. Oct 2, 2008 · 4. I have an input field that should only be valid if it contains only digits and no special characters and no spaces. makes sure that not just a substring but the entire string is matched by the regex. replaceAll(" "); The aim of this is to replace all instances of two consecutive whitespace with a single space. I'm trying to make it so that it matches only if the string does not have a space anywhere, not just at the end. Then replaces both groups by just the first group. So simply put, use regex to match space, then one or more spaces as a means to Oct 26, 2013 · If your password matches the regex above, it is invalid. Feb 19, 2016 · 18. aaaa bbbb cccc and I want to match "aaaaa ", "bbbb ", "cccc ". – Allen. \w already includes \d so you can remove \d from character class. Then add the message your users will see if the validation fails. The regex searches for the character string. Last thing I have problem with is that I want to enable characters such as Perl Regular Expression Extensions In addition to the POSIX standard, Oracle supports the common Perl-influenced meta characters. For instance, \d{3}-\d{3}-\d{4} will match (US) phone numbers: exactly three digits, then a hyphen, then exactly three digits, then another hyphen, then exactly four digits. This would match. Nowhere in there does it allow for a space. That said, this is typical MS trash. -]{3,24}$/i. g: two or more spaces in a row. Regular Expression to Given a list of strings (words or other characters), only return the strings that do not match. BUT no consecutive spaces, e. you can strip the whitespace beforehand AND save the positions of non-whitespace characters so you can use them later to find out the matched string boundary positions in the original string like the following: Jan 15, 2009 · 28. 0123456789. Metacharacter. Your regex doesn't check for only one space. Jun 10, 2014 · This answer is useful. *\. This rule disallows multiple spaces in regular expression literals. Note the explicit toRegex() call, which makes a Regex from a String, thus specifying the overload with Regex as pattern. Basically I need the letters A-Z, digits, periods, dashes, underscores, dollar signs, at signs, the asterisk, and the exclamation point to be allowed and the username can be up to 30 characters long. -. answered May 16, 2010 at 7:04. ^\d{2}(?: ?\d+)*$. I'm using the following Regex ^[a-zA-Z0-9]\s{2,20}$ for input. For instance, the small letter “d” is the metacharacter for a digit, and the capital letter. Learn how to use regular expressions, trim methods, and angular validators to prevent unwanted spaces in your form data. for c++ ansistring="^[\\d\\w]*$"; Nice one, +1. The / starting and ending the regular expression signify that it's a regular expression. If ECMAScript-compliant behavior is specified with the ECMAScript option, \S is equivalent to [^ \f\r\t\v]. The most common forms of whitespace you will use with regular expressions are the space ( ␣ ), the tab ( \t ), the new line ( ) and the carriage return ( \r) (useful in Windows environments), and these special characters match each of their respective whitespaces. "(\w\s)+$" : this must match a word with a white space at least and must finish with white space. The digit is: \d The multiplier which is not allow zero matches: +. The small letter “s” metacharacter stands for space, and the capital letter “S” stands for non-space. Likewise, you can set upper or lower Nov 13, 2021 · 64. Jquery validation for Full Name using regular expression. underscore is allowed. ain' matches sequences of five consecutive characters that end with 'ain'. There's also an overload which allows you to produce the replacement Jan 29, 2019 · Content. Starts with two digits, then a optional group starting with an optional space followed by at least 1 digit. It also includes _ that is not wanted. See the Match whitespace but not newlines (Perl) question for more detail. If we wanted to find the second word in the string, we could modify our function as follows: SELECT REGEXP_SUBSTR ('TechOnTheNet is a great resource', '(\S*)(\s)', 1, 2) FROM dual; Result: 'is ' This example would return 'is ' with a space at the end of the string. Match any character in the set. Below is the explanation of the regular expression: ^ Assert position at start of the string \w+ Match any word character [a-zA-Z0-9_] Quantifier: + Between one and unlimited times, as many times as possible, giving back as May 15, 2019 · Try a negative look ahead like this: ([A-Z]\w+\b(?!\s)) In the above example, \b looks for the word boundary at the end and (?!\s) will fail the regex if it finds a space. If you are a life sciences developer who relies on Perl to do pattern analysis on bioinformatics data stored in huge databases of DNAs and proteins, you can use SQL Regular Expression support directly on the data Rule Details. This field is 1 character only. The main difference between this and the accepted answer is that it will also pick up newlines and fail when the multi-line flag is set. If you want to check for white space in middle of string you can use these patterns : "(\w\s)+" : this must match a word with a white space at least. The JDK contains a special package, java. In general, to match any non-whitespace char, you can use. Mar 31, 2015 · Not possible. PatternSyntaxException – if the provided regular expression’s syntax is Dec 29, 2015 · If you just want to limit the number of characters matched by an expression, most regular expressions support bounds by using braces. Dec 26, 2015 · perl's \S (horizontal and vertical spaces) now also recognised by some other regexp engines is [^[:space:]] in POSIX and bash's EREs. Aug 27, 2015 · 1. Also note: that this works for only a-z, A-Z. And it also contains no spaces, tabs or line breaks. toRegex(), " ") This line replaces multiple whitespaces with a single space. What I tried was: /[^a-zA-Z0-9]|(. The { } brackets means allow between 0 and 20 times. 3. Jul 24, 2011 · 0. Everything inside the [ ] brackets means allow any of these characters (and space is not in those brackets). try ^[\d\w]*$ or ^ [\w]*$ as reg' Expression means from ^(start) to $(end) match 0-9a-zA-Z only. However, sometimes the expressions can be confusing, for example, \s and \s+. Url Validation Regex | Regular Expression - Taha Match an email address Validate an ip address nginx test Extract String Between Two STRINGS special characters check match whole word Match anything enclosed by square brackets. Once the it gets to the regex, it's treated as a regex. What is the regex so it also can select the space bewteen number? e. regex Function. This warning occurs in this example since str. match as few as possible. Enter your regex pattern. *\s)/g. This sed-syntax is also used to mask, or anonymize Regular Expressions (Regex) Regular Expression, or regex or regexp in short, is extremely and amazingly powerful in searching and manipulating text strings, particularly in processing text files. *\\s. Equivalent to the Unicode character categories [^\f\r\t\v\x85\p{Z}]. If you want to remove trailing whitespace from lines that have some text, but not just blank lines, here is regex to find: (\S+)(\s+)$ and replace with $1. Email address. Example. It would be easier to use a regex literal though. regex, totally dedicated to regex operations. The return type of regex depends on the capture groups, if any, in the pattern: If the pattern has no capture groups at all, the result is a single string covering the substring matched by the pattern as a whole. Mar 15, 2024 · A regular expression (regex or regexp for short) is a special text string for describing a search pattern. match call is not properly escaped. Setup. The input length must be a least 2 characters and maximum 20 characters. matches(". I also want to enable space in the input, but only space, not new line, etc. May 7, 2012 · Something like so: ^[^\d()]+$ should do what you need. Either will work: var regex = "^\\s+$"; var regex = /^\s+$/; Also note that + will require at least one space. *") as two "greedy" matches. no-regex-spaces. 333k 58 512 566. Description. Mar 5, 2010 · No leading or trailing spaces are allowed, empty string is NOT allowed, string containing only spaces is NOT allowed Supports English alphabets only Supports hyphens ( Some-Foobarbaz-name , Some foobarbaz-Name ), apostrophes ( David D'Costa , David D'costa , David D'costa R'Costa p'costa ), periods ( Dr. If you mean "What's the reqular expression to check there is no white space in a string", the following pattern will work: This will find any string that only contains non-white space (spaces, new lines, tabs, etc). ab|cd. The search function takes both strings and regexes, so the / are necessary to specify a regex. So you can use the regex [^\\s] (you have to use \\ in order to make a single \ , which will then translate to \s finally. Description Property. John , Robert Downey Jr. txt$. Oct 25, 2015 · 3. You are probably familiar with wildcard notations such as *. Regular expressions, or REGEX for short, are tools for solving problems with text strings. Spaces in regexes are only ignored, if the option x is used and its always possible to add a space to a character class, even with x enabled. 01 23 45 67 89. Any character contained within the square brackets. Next, add the expression you want to validate against. Jan 1, 2015 · In regex, the \s modifier translates to [\r\t\f ], which means no newline characters, no tab characters, no form feed characters (used by printers to start a new page), and no spaces. npinti. Suppose we have a list of emails in a data frame called email: Now, generate a regex pattern to match the username, domain name, and domain. If you want to allow only a single space between first name and last name. That is you want to apply on the string. 01234 5679. Regex is supported in all the scripting languages (such as Perl, Python . In this tutorial, we're going to cover regex basics with the help of this site . P May 22, 2023 · After splitting against the given regular expression, this method returns a string array. Matches a character in the range "A" to "Z" (char code 65 to 90). Pattern whitespace = Pattern. "Test me". It will start from the beginning of the string ( ^) and match one or more characters which are not a digit ( \d) or a bracket. Find a-z, A-Z, 0-9. I am using ng-pattern in angular to validate the input. Aug 2, 2017 · For example in Gender field user can simply enter white space and submit the form. K. That will match exactly zero or one spaces. Here is my regex: Gender pattern="*[MmFf]?*" #This field should allow M or F letter lower or upper case. Explosion Pills. No spaces or commas should be allowed for example. To actually match the lines, use this (see online demo ): ^(?: . Oct 3, 2011 · Use the following regular expression: ^[A-Za-z]*, $. You may want to use *. Jan 23, 2022 · import re regular_expression = r'[^a-zA-Z0-9\s]' new_string = re. _. One line of regex can easily replace several dozen lines of programming codes. echo a b cX | sed -r "s/(a\sb[[:space:]]c[^[:space:]])/Result: \1/" Result: a b cX first space I match with \s; second space I match alternatively with [[:space:]] the X I match with "all but no space Apr 7, 2022 · Grep Regex Example. There are millions of people with names who’ll successfully pass this regex. string = string. Regex Tutorial - A Cheatsheet with Examples! Regular expressions or commonly called as Regex or Regexp is technically a string (a combination of alphabets, numbers and special characters) of text which helps in extracting information from text by matching, searching and sorting. If there's no match, your password is valid and contains has at least 8 characters, one upper case letter, one lower case letter and one symbol or special character. Regular expressions can be very complex and difficult to understand, which is why it's important to keep them as simple as possible Nov 19, 2017 · 14. Or the start of lines with stop - ^stop[a-zA-Z]* for the word only - first word only . Match or Validate phone number Match html tag Find Substring within a string that begins and ends with paranthesis Mar 17, 2013 · How to write a regexp in TCL that matches word and whitespaces. 4. simply use \s to match if space exist and then use not () or ! () to reverse might be quicker. Find a-z, A-Z, 0-9, including special characters. Alternatively, we could say : "at least one digit, anywhere in the input ". Sep 27, 2018 · I have regex which should match following. Just add a space or \s (to allow any space character like tab, carriage return, newline, vertical tab, and form feed) in the character class. Therefore, the output highlights the following results: if. Otherwise, if you want to apply the rule do not match the whitespaces, you need to go with a negated rule. isWhitespace () method : \u00A0, \u2007 and, \u202F, so you probably want to 1. Extracting Non-Whitespace Elements: For the string: apple banana cherry . The RegExp constructor is useful when you want to build a dynamic pattern, in this case you don't need it. You use REGEX to solve problems like finding names or telephone numbers in data, validating email addresses, extracting … Continue reading Google Sheets REGEX Formulas Dec 3, 2008 · This works for . I can't find it anywhere. I've used RegEx with Perl and C# before and they both support the pattern \s to search for whitespace. " This regular expression ^\w+(\s\w+)*$ will only allow a single space between words and no leading or trailing spaces. Letters a - z. Tim Pietzcker. If you need to pull this out of a string and it doesn't May 17, 2011 · but this will allow 5 spaces in the beginning. What you need is to replace "anywhere in the input" with "from the beginning to the end of the input". find()) matcher. We only need to import it into our code. Regular expressions can be very complex and difficult to understand, which is This example would return 'TechOnTheNet' with no space at the end. The result shows all instances where the letter i appears followed by an f in the . Mar 7, 2023 · In regular expressions, “S” is a metacharacter that represents space. Apr 6, 2018 · That means no spaces, no apostrophes, and no umlauts, accents, or hyphens. There's a difference between using the character class \s and just ' ', this will match a lot more white-space characters, for example '\t\r' etc. That's how the pattern for most metacharacters works. This article will provide a brief overview of using regex in order to accomplish special conditions requiring search syntax as well as provide examples of more advanced syntax. I'm not sure if this is a correct regex. match ab or cd. Note that for both regex I have included the ^ and $ operator which mean match at start and end. Feb 3, 2015 · But you can simply replace() that characters with a space, and then call trim(), so you keep the spaces that are 'inside' your string. Use two regex search strings. Sep 10, 2012 · I'm trying to use egrep with a regex pattern to match whitespace. It finds trailing text as first group, then trailing whitespace just after text as second group. From the MDN Docs, the function returns -1 if there is no match. sub(regular_expression, '', old_string) re substring is an alternative to the replace command but the key here is the regular expression. Letters A - Z. Allowed characters: [a-zA-Z0-9] . The Difference Between \s An explanation of your regex will be automatically generated as you type. That is why you should wrap the pattern with ^ and $ anchors and add a + quantifier after \S to match 1 or more occurrences of this subpattern. Any single character, including white space '. The \S in [A-Za-z0-9-!/\S] makes this character class equal to \S, but you want to make sure all chars in the string are non-whitespace chars. Name allow alphabets only,not allow any special characters. How is Regex Interpreted by the Platform? Regex Examples. txt to find all text files in a file manager. The ^ means italic NOT ONE of the character contained between the brackets. Note: This will allow any number of spaces anywhere in the string. disallow multiple spaces in regular expression literals (no-regex-spaces) The "extends": "eslint:recommended" property in a configuration file enables this rule. They work by matching patterns. Word characters are limited to the English alphabet, digits, and underscores. In fact I can use [:space:] only inside collections. Or if you want to match the word in the string, use \bstop[a-zA-Z]* - only the words starting with stop. You can think of regular expressions as wildcards on steroids. * $) To match a the spaces, use this (see online demo ): Mar 2, 2012 · 1. fv kk ji ry id tx mr rm bs qy