Url validation regex typescript w3schools. should optional if you want to match both youtu.

Url validation regex typescript w3schools pattern('/^ Nov 27, 2018 · Regular expression for IP Address Validation. ^[a-zA-Z]+[- ']{0,1}[a-zA-Z]+$ Mar 7, 2017 · Can any one explain why?? This happening because your regular expression doesn't end with any anchor meta-character such as the end of line $ or a word boundary \b. E below to validate google. date validator. e. I have a function in Typescript testing rules for a text field in Vue using Vuetify. Returns the first match: test() Tests for a match in a string. matcher(). escape() is deprecated, and does not bother to encode "+" characters, which will be interpreted as encoded spaces on the server (and, as pointed out by others here, does not properly URL-encode non-ASCII characters). Jun 22, 2015 · Here's a breakdown of the regex: ^ // start of URL ( // protocol section https? W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Based on that I would return proper value. Although the article is not yet complete, I have come up with a PHP function which does a pretty good job of validating HTTP and FTP URLs. 0 Jan 9, 2023 · I want to use JavaScript (I can also use jQuery) to do check whether a string matches the regex ^([a-z0-9]{5,})$, and get a true or false result. May 24, 2018 · Works in all browsers with new URL() Standard Url validator Creates and returns a URL object referencing the URL specified using an absolute URL string, or a relative URL string and a base URL string. May 6, 2020 · Here it is an example with Typescript overriding the url with an option to check the protocol as JavaScript regular expression to validate only path params in URL. Jun 19, 2015 · As you can see from the document, the URL validator the regular expression based on this gist so you can use it without uing the whole package. JS Regex url validation. I am not a big fan of Regular Expressions, but if you are looking for one, it is better to go with a RegEx used in popular packages. export const Schema = z. Oct 15, 2013 · You're missing www in your regex; The second \. Compiles a regular expression: exec() Tests for a match in a string. exceptions. When we say validate an email address we are talking about two things. Field | AttributeTargets. The Condition is "Password must contain 8 characters and at least one number, one letter and one unique character suc Feb 2, 2022 · Regex-validated strings are not a thing in Typescript. -]+\\. So when you ask the regex engine whether 123-345-34567 is valid phone number it will try to find a match within this string, so it matches 123-with this part (\([0-9]{3}\) |[0-9]{3}-) then it matches 345-with this part [0-9]{3 Apr 18, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Typescript Angular 7 provides a range of built-in validators that you can use to validate your forms, including an EmailValidator. That is to use a regular expression to assist the user in entering an address. May 15, 2023 · Whether you need to validate user input, extract components from URLs, or perform any other URL-related tasks, understanding how to construct a regex for URLs can greatly enhance URL validation in your applications. I'm using this way to validate Urls. refine's. Feb 24, 2023 · One common mistake is not accounting for all possible variations of a URL. url except requests. )?” Match the given URL with the regular expression. Whether you need to validate user input, extract components from URLs, or perform any other URL-related tasks, understanding how to construct a regex for URLs can greatly enhance URL validation in your applications. log(learnRegExp('ht W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Sometimes, We want to do a validation typescript file. Property | AttributeTargets. copy and paste this URL into your RSS reader. Returns true or false: toString() Returns the string value of the regular expression Oct 24, 2024 · One common approach to check if a string is a valid URL is by using regular expressions. requiredstring validator. And I am trying to validate using regular expression but the result returns always false f W3Schools offers free online tutorials, references and exercises in all the major languages of the web. how to Extract Link part from a string in javascript. javascript RegExp validate url expression. Nov 3, 2021 · A couple of comments: If a password may not contain more than three (3) repeating characters or numbers (which I interpret as meaning anywhere within the password), then it certainly could not have more than three sequential characters or numbers. cnn. In this blog post, we covered how to check for a valid URL in Typescript using both regular expressions and built-in methods. Do regular expressions from the re module support word boundaries (\b)? Mar 17, 2021 · I'm trying to write a simple function to validate a username and password that a user would input. regex needs no additional escaping v / regex / gm ^ ^ ^ start end optional modifiers As others sugguested, you can also use the new RegExp('myRegex') constructor. EDIT: Be careful, this solution is not unicode-safe and not XSS-safe. io. This has to be done using Typescript. should optional if you want to match both youtu. This regular expression does account for URLs with or without the www. With simple text-replacement like this, you would need to chain several . , #fragment at the end of the URL). You can shorten the regex by using a character range like this: Feb 1, 2013 · I need to validate the URL and check if URL entered is domain or subdomain. Mar 2, 2016 · You can try and do a simple GET on the page, if you get a 200 back it means the page exists. Dec 16, 2024 · JavaScript validation with regular expression: Exercise-9 with Solution. js, which provides a wide range of string validation and sanitization methods, including URL validation. But the comparison table for those regexes also shows that it is next to impossible to do URL validation with a single regular expression. Usually a combination of word that separated with hyphen i Hate Regex Built-in validators in Struts 2 validation framework. shape({ email: Yup. 2. Parameter, AllowMultiple = false)] public class ValidateUrlAttribute : ValidationAttribute { public ValidateUrlAttribute() { } public override About External Resources. Things like https://www. 2) PHP_INI_ALL: pcre I am trying to validate the password using regular expression. Jan 11, 2019 · Thought I'd share my solution to this issue as I was hung up by not being able to access the image height and width outside of the callback function given in others' solutions. To convert user input into a regular expression in JavaScript, you can use the RegExp constructor. Feb 20, 2023 · I don't know if you can use multiple . g. Below is the implementation of the above approach: from requests. The FILTER_VALIDATE_REGEXP filter validates value against a Perl-compatible regular expression. function subDomain(url) { // IF THERE, REMOVE WHITE All of the regular expressions that I've found on the web return valid when I use this URL. You'd need to write your own validator then Sep 9, 2013 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. I built this pretty much through trial and error, but it seems to work with all the patterns that Poppy Deejay posted. One common approach to validate URLs in TypeScript is by using regular expressions. The username has the following validation rule: The email must from a university (. FAQ. Is the validation that most people are talking about. regex Regular expression for URL Validator. I am actually using typescript in my app, but I've made a demo here just in JSX: https://codesandbox. This is out of scope of the current question. Dec 17, 2019 · Also, instead of adding all allowed special characters, can we add only special characters which are not allowed in RegEX ? ===== Validating the code in typescript using below code, It should work as suggested but still getting false for all input values W3Schools offers free online tutorials, references and exercises in all the major languages of the web. email validator. 7 of Joi const method = (value, help Dec 9, 2011 · I am looking for a way to validate a link to make sure that it is pointing to a LinkedIn public profile page in PHP. Match any character \w: Match a word chracter \W: Match a non-word character \d: Match a digit \D: Match any non-digit character Nov 24, 2020 · I'm trying to build a Password validator. The password is getting updated if we have all the characters as alphabets. Is validating that it's a real email address (which you can validate by sending a confirmation link to the address. Validate the URL strings using the compiled regex. Aug 25, 2018 · Instead of using regex you might try to create a URL and return true if it succeeds or false, if it throws an exception. The RegExp constructor takes a string as its argument and converts it into a regular expression object Oct 2, 2008 · I use RegexBuddy while working with regular expressions. IsWellFormedUriString checks that the URL format is correct and does not require escaping. regex101: Validate Url with or without http(s):// Regular Expressions 101 W3Schools offers free online tutorials, references and exercises in all the major languages of the web. the structure of pancard in India is as follows. Great stuff! I want to migrate my existing ASP. The App. required validator. Here's a simple example of how you can implement this in TypeScript: const pattern = new RegExp ('^(https?|ftp)://[\\w. Jul 20, 2018 · This is a good example of why regex would be useful, but at that point the need for compile time type checking seems pretty slim. To implement email validation in your form, you simply need to add the EmailValidator to the list of validators for the email input field. js file looks like this: May 15, 2015 · how can I use this regular expression to validate a valid url in python. 1. here your url should be start from www. Dec 7, 2022 · Here the idea is to use Regular Expression to validate a URL. regular expression for wildcard Dec 27, 2016 · Instead of using a regex, I suggest using a library called yup. test. can any one help me in creating a regular expression for password validation. NET validators. double validator. Regex for validate a website URL. I use the /^[a-z]+:[^:]+$/i regular expression for URL validation. A string or any other object with a stringifier that represents an absolute URL or a relative reference to a base URL. Related. Currently, I'm using the version 16. Aug 1, 2015 · Regular expression to find URLs within a string. Dec 3, 2024 · In this article, we will convert the user input string into a regular expression using JavaScript. For example, this regular expression does not match URLs with a fragment (i. My regex un Nov 27, 2024 · Username validation in JavaScript requires usernames to start with a letter, contain only letters, numbers, and underscores, and be between 3 to 16 characters long, with additional checks for invalid characters and starting/ending conditions. – W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Get the URL. Jul 3, 2019 · Given an IPv4 or IPv6 address determine if the address is a valid input. Mar 29, 2023 · Can TypeScript be used to validate the value passed into a function using a regular expression? For instance, assume that an object is passed to a function as follows: call({ '/url/to/path': {}, Feb 11, 2013 · I need to validate a known domain, like domain. However, when I copied it as Java S May 8, 2015 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. regex = “ ( (http|https)://) (www. I cant seem to comprehend why Vuetify text- Regex options: Case insensitive Regex flavors: . I try to hold this modular, so it can be better maintained and adapted to own requirements. Oct 10, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. refine((value Apr 21, 2024 · Regular expressions, or regex for short, are a powerful tool for working with text that every developer should have in their toolkit. [0-9]{1 Mar 11, 2021 · I would like to check whether provided value match defined regex-match string type. Regular Expression to validate a URL or domain name. If you need a complex validation, maybe it's better to look somewhere else. Mar 28, 2022 · I wrote the following simple script: let regexpNumber = new RegExp('^[+ 0-9]{5}$'); const digitStringProp1: string = '12345' const digitStringProp2: string = '1234f Nov 22, 2022 · How to Use the URL Constructor to Validate URLs; How to Use npm Packages to Validate URLs; How to Use Regex to Validate URLs; How to Use the URL Constructor to Validate URLs. Python LinkedIn REDIRECT_URI. Libraries are often a better option because of this. I am missing a replacement for the regular expr Jan 6, 2020 · test is javascript function to validate regex. I wanted to use an NPM library ip-address as it seemed to meet all of my needs, but i Javascript regular expression to validate URL. regex validator. Another common mistake is assuming that all URLs have a www. String validation with regex in JS. pattern to extract linkedin username from text. 645. com also but it returns false. matcher (). Nov 14, 2024 · url. Write a JavaScript function to check whether a given value is a valid URL or not. Oct 2, 2008 · I've been working on an in-depth article discussing URI validation using regular expressions. What can be changed in R. required('This field is mandatory'). In Java, this can be done by using Pattern. edu) or . "#", "?", and "&"). TL;DR don't use a regular expression to validate complex real-world data like phone numbers or URLs. Nov 20, 2024 · To validate phone numbers using JavaScript with regular expressions (regex), you can define a pattern to match valid phone number formats. com with JavaScript, but I need to validate it with any subdomain or sub-subdomains and so, and with any protocol and with any folder, sub-folder, and so, I have this regular expression: Jan 8, 2010 · AFAICT, URL is a typescript "built-in" feature, based on the WhatWG Url specifications. In your TextFormField's use this validator. +\"))@((\[[0-9]{1,3}\. A regex, however, is complex and impractical in a real-world situation as it can be challenging to read, scale, and debug. test checked against supplied URL and return true-valid Jan 2, 2023 · The regular expression in the isUrlValid function above determines whether a string is a valid URL. ,;:\s@\"]+(\. Sometimes, We want to do validation typescript files. Regular expressions provide a powerful way to define patterns for matching strings, making them well-suited for URL validation. May 16, 2016 · i want to do pancard validation in javascript only. These are invalid of course: domaia@na Feb 11, 2017 · The below regex is useful for surnames if one wants to forbid leading or trailing non-alphabetic characters, while permitting a small set of common word-joining characters in between two names. The linked to page has both rationale and examples. string() . Regex to validate url with port, clarification needed. Or. Regex for domain validation. Hot Network Questions Denial of boarding or ticketing issue - best path forward Validation using RegEx. [email protected] will also get email sent to [email protected]). com'; Sep 9, 2024 · Whether you choose to use regular expressions or built-in methods like the URL class, ensuring that user input follows a valid URL format is a best practice. It uses the same above regular expression pattern for url validation; RegExp object is created with regex; pattern. Asking for help, clarification, or responding to other answers. Use a specialized library. Try Teams for free Explore Teams Oct 10, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Learn more Explore Teams Start of line $ End of line. Oct 15, 2008 · Use the filter_var() function to validate whether a string is URL or not: var_dump(filter_var('example. 2) PHP_INI_ALL: pcre. Here is the current version: Aug 20, 2009 · I written also a URL validation function base on rfc1738 and rfc3986 to check http and https urls. Try Teams for free Explore Teams Free online TypeScript tutorial from W3Schools. Sample Solution: JavaScript Code: Here is the case: I want to find the elements which match the regex targetText = "SomeT1extSomeT2extSomeT3extSomeT4extSomeT5extSomeT6ext" and I use the regex in Jan 8, 2024 · Unlock the power of pattern matching in your TypeScript applications with this comprehensive guide to regular expressions. Which characters make a URL invalid? 133. PHP Web Development: Validation Hello there, aspiring PHP developers！ Today, we're going to dive into the fascinating world of form validation, specifically focusing on email and Mar 24, 2011 · And did you know that an empty string is also a valid URL? Its true! If you really want to validate a URL, or shall I say URI, the first document to read is: RFC-3986 - Uniform Resource Identifier (URI): Generic Syntax. EXAMPLE type RegexType =`${ Aug 30, 2016 · I'm working on create a regular expression in javascript to validate website urls. Nov 18, 2009 · Is it possible without using regular expression? For example, I want to check that a string is a valid domain: domain-name abcd example Are valid domains. If you want to take care of all the URL validation scenarios please refer In search of the perfect URL validation regex Jun 8, 2023 · Another option is to use a third-party library, such as validator. object(). Sep 15, 2010 · I testet all the regular expressions that are shown here and none could cover all url types that my client was using. There can be any number of digits with commas, but it must start and end with a digit. The function encodeURI() does not bother to encode many characters that have semantic importance in URLs (e. May 12, 2023 · How to Implement Email Validation in Typescript Angular 7. . I tried a solution, it work but in some scenario it failed. Next Topic: Struts 2 validation by built-in validators with example. If url is a relative reference, base is required, and is used to resolve the final URL. NET, Java, JavaScript, PCRE, Perl, Python, Ruby Check whether each part of the domain is not longer than 63 characters, and allow internationalized domain names using the punycode notation: Sep 5, 2019 · On Angular, I am trying to validate email using following regex - ^(([^<>()[\]\\. RegEx for finding URLs inside a string. These validations are regular expression based, so they are not as strict as a full date/time Here is the regular expression that should achieve this for you. Remember that client-side validation is only a convenience you provide to the user; you still need to validate all input (again) on the server. Aug 4, 2022 · The Regex literal notation is commonly used to create new instances of RegExp. My issue is that the boolean valid is always false even when the regex is tested to be correct. exceptions def check_url(url): prepared_request = PreparedRequest() try: prepared_request. Uri. Try Teams for free Explore Teams Finally, I get the feeling you're validating user input in a web browser. I want to validate google. What Are Regular Expressions? Regular expressions (regex) are sequences of characters that form a search pattern, primarily used for string matching and manipulation. Here are a few real-world examples and use cases: Using regex, you can ensure that URLs submitted through a web form are in the correct format, preventing errors or security A ‘slug' is the part that comes at the very end of a URL, and refers to a specific page or post. Here's an example: W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Aug 14, 2015 · I'm attempting to validate a field name to match a certain format in JavaScript using Regular Expressions. So that mandatory. The maximum number of backtracks that the regular expression engine is allowed to do while evaluating an expression. In short it offers a structured way of using urls while making sure that they are valid. It is based on RFC3986. First, let me show you what a URL is TypeScript-first schema validation with static type inference. test checked against supplied url and return true-valid Feb 8, 2021 · how can I use this regular expression to validate a valid url in python. ) – Mar 9, 2012 · The following regex is fine for your first name spec: var nameRegex = /^[a-zA-Z\-]+$/; Adding digits for your username check is straightforward: var usernameRegex = /^[a-zA-Z0-9]+$/; Note: There are many ways to write regular expressions. angularjs 1. Its limited to india only. Javascript URL validation regex. Return true if the URL matches with the given regular expression, else return false. int validator. I've been using this site to test the expressions that I've been finding. I need that to properly override my method. be and youtube (but I didn't change this since just youtube isn't actually a valid domain - see note below) Oct 17, 2019 · I have Joi schema and want to add a custom validator for validating data which isn't possible with default Joi validators. When you pass a string to the URL constructor, it returns a new URL object if a string is a valid URL. url validator. replace() function calls to accomodate all the different variations needed (http/https/ etcetera. Credit card validation in JavaScript is used to make sure that all the number entered in the specified credit card number field should be a valid card number. com. for example : AAAAA9999A First five characters are letters (A-Z), How to Validate URLs Using Regex in Go? Validating a URL in Go with regex involves: Define the regex pattern for a valid URL. Validate URL. I've got something clo Jun 2, 2009 · You should bear in mind that a-z, A-Z, 0-9, . Gmail, for example, lets you put a "+" sign in the address to "fake" a different email (e. Dec 7, 2022 · Match the given URL with the regular expression. There are a lot of email validation regex questions on SO, please use the site search. Modify regex used to validate URL to allow IP addresses. Regex is flexible and can help match numbers with different formats, such as including country codes, area codes, or specific digit lengths. subdomain. It's far more likely that this is going to be a dynamic value, which typescript can't check anyway, and it would be a lot easier to just make a ValidIP class which receives and checks the string or something like that. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Ask questions, find answers and collaborate at work with Stack Overflow for Teams. I need the string inputted to resemble this: word\word\word So anything inputted can't be blank, and it must be three words seperated by a backslash. gov or . 25. \\w{2,}(/\\S*)?$', 'i'); return pattern. 4. [^<>()[\]\\. you can make your own Dec 2, 2008 · Stick with encodeURIComponent(). email('Enter a valid email'), }); Apr 9, 2017 · I am having trouble with using Typescript to validate if an email address is valid or invalid using regular expression this is what I have. test (url); const url = 'https://www. 0. I searched a bit in the stackoverflow community and i did not find something to be completed helpful. xxx fails validation. If your particular about your given pattern then above regex expression from other answer looks good. And based on the comment and reference by @Leon on the answer by @AndrewD, I made this regular expression and it works for me. NET, Rust. I found this regex pattern: Validators. object({ fullname: z . (available since PHP 5. Try this (using jQuery), the function is the success callback function on a successful page load. I have a website and I would like my users to be able to share their LinkedIn p Jun 14, 2023 · Real-World Examples and Use Cases of URL Validation Using Regex URL validation using regex can be crucial in several web development and data processing scenarios. Why I am saying custom validator because Validators always work in logical AND, so to achieve logical or you need to write custom validator. Otherwise, it returns an error: Dec 31, 2023 · # Typescript url regexp validation. com, www. By using custom validators. There is little reason to write a new regular expression; just pick an existing one that suits you best. com, complete with Try it Yourself examples and exercises. See an example of my cross-browser InputKeyFilter code with URL validation. Note: The pattern attribute works with the following input types: text, date, search, url, tel, email, and password. /// <summary> /// Ensures the property is a valid URL. [0-9]{1,3}\. 5. So, you need firstmost hostname stripped from your result, unless there only two parts already? Just postprocess your result from first match with regexp matching that condition: Nov 11, 2008 · I am using the jQuery validation plugin. com', FILTER_VALIDATE_URL)); It is bad practice to use regular expressions when not necessary. May 15, 2023 · In this article, I'll show you the fundamentals of crafting a regular expression for URLs. Jsf validation regex example program code in eclipse : JSF f: validateRegex tag is used to validate JSF component with a given regular expression pattern Sep 28, 2010 · Validate url in JS using Regular Expression. How to validate domain name using regex? 0. Sep 14, 2014 · This is unideal for the lack of Regular Expression usage. I have been looking into this issue a bit and have written (am writing) an article on the subject: Regular Expression URI The pattern attribute specifies a regular expression that the <input> element's value is checked against on form submission. Sep 9, 2024 · In this blog post, we will explore how you can check if a URL is valid in TypeScript. org - The password has the following validation rules: At least 10 characters (and up to 30 characters) 5 or more unique characters Your regex should cover your whole string, by using ^ and $ to signify start and end of string: /^[abcdefghijklmnopqrstuvwxyz]+$/ Otherwise, it will match part of your string, which is why it matches when you have a mix of good and bad characters, but fails when every character is bad. A regular expression allows you to detect invalid URLs in input strings. I am validating URL with following regular expression. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself. /// </summary> [AttributeUsage(AttributeTargets. Name: "validate_regexp" ID-number: 272; Possible options: regexp - specifies the regular expression to validate against Jun 26, 2018 · I need to make a password pattern validator the password should have: 1 uppercase letter 1 lowercase letter A number A minimum length of 8. regex specifiers, but you can add multiple . Q: What are the limitations of using regular expressions for URL validation? A: Regular expressions can become complex and difficult to manage, especially for advanced Javascript regular expression to validate URL. is valid or invalid Mar 14, 2023 · Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. Provide details and share your research! But avoid …. ,;:\s@\"]+)*)|(\". You can apply CSS to your Pen from any stylesheet on the web. 1. But you will have to be especially careful with escaping: Jan 17, 2018 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. From its library I copied the regular expression to match URLs. The start must be numeric or $ sign. recursion_limit "100000" The maximum recursion depth that the regular expression engine is permitted to reach while evaluating an expression. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Use custom regex to validate linkedIn url. You can use as as follows: import * as Yup from 'yup'; // here you can add multiple validations per field const EmailSchema = Yup. Aug 31, 2016 · We need to validate n number of scenarios for URL validation. string(). Compile the regex using Go's regexp package. Explore Teams Jun 10, 2022 · @zxf18682 You need to define the rules for the user, domain and TLD parts of the regex. NET solution to use jQuery instead of the ASP. prepare_url(url, None) return prepared_request. 5 postcode validation regex. – Dec 31, 2023 · # Typescript url regexp validation. Regular Expression URI Validation. example. Note: We use the pattern attribute (with a regular expression) inside the password field to set a restriction for submitting the form: it must contain 8 or more characters that are of at least one number, and one uppercase and lowercase letter. Still, the need is here: in my case, immutable strings that are validated against a Regex for UUIDv4, URIs, Email, etc. I've chosen to provide a version that matches what you started with. This is the code i'm working with, but i'm not sure if the pattern is the right syntax?!! Since this post (regex-for-windows-file-name) redirects to this question, I assume its about windows file names. I tested successfully within RegexBuddy. 3. With regex, you can search for patterns, validate data formats, parse information from logs, and handle all sorts of text processing tasks with just a few lines of code. models import PreparedRequest import requests. It uses the same above regular expression pattern for URL validation; RegExp object is created with regex; pattern. Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. Tip: Use the global title attribute to describe the pattern to help the user. All of the regexes in Bynens' list produce false positives and false negatives. MissingSchema, e: raise SomeException I have an requirement to validate email and date fields from an Excel file using typescript Angular app. console. , _ and - are not the only valid characters in the start of an email address. match() seems to check whether part of a string mat Allowing '/' makes sense when checking for a full valid URL, but not when checking if a string can be used as part of a URL. Jun 23, 2018 · Just use default Pattern Validator. To understand why imagine a user with a username ending or starting with a '/'. validator. xvltpw dbu rdhknb psm crj cxega brv nlaaw hwqdxt avboizs