Regex url parameters NET, Rust. This is particularly useful when you need to enforce specific formats or capture multiple parameters. For example URLs could be: Dec 6, 2024 · As an industry veteran with over 15 years of full-stack development experience, I‘ve processed my fair share of URLs. Test and implement URL regex with real-time validation, domain checking, and comprehensive web address format validation. Say I want to remove the foo parameter. A regular expression to match all parameters (anything after the ?) in a URL. I have to remove the query string (utm_source, utm_medium and utm_campaign) from the URL that user can paste to the URL input. Feb 4, 2013 · This pattern assumes param values are nonempty, for example it won't match a= in url. This tutorial will guide you through the components of a Mar 14, 2018 · The code is not efficient, let's say the url matched in the first regex case but I'm still evaluating second regex for the second case while knowing it's mutually exclusive and only one of them wil Aug 24, 2011 · The following solution combines other answers and handles some special cases: The parameter does not exist in the original url The parameter is the only parameter The parameter is first or last The new parameter value is the same as the old The url ends with a ? character \b ensures another parameter ending with paramName won't be matched Solution: Overall, this regular expression matches URLs that start with “/old-page/”, optionally followed by a trailing slash, and captures any additional characters (including query parameters) into a capture group. I've got a string in . Match the given URL with the regular expression. Query parameters: Includes query string and fragments. Jan 5, 2024 · Regular expressions are a useful tool in JavaScript for pattern matching and manipulating strings. Pattern: URL “URL” is one of the patterns that you can select on the Match panel. For example /your-url/ and /your-url will match Ignore case. In this tutorial, we will explain a regex pattern designed to match a specific URL format. However if you want to use regex for some reason, here is a lookbehind regex that you may use: Jan 16, 2025 · The URL components help you to better understand the functionality of the path filters operators. Oct 30, 2025 · The URL Pattern API defines a syntax that is used to create URL pattern matchers. Learn various methods including using URL and URLSearchParams, regular expressions, and libraries like query-string to efficiently extract and manipulate URL parameters for your web applications. Aug 23, 2023 · URLs are the foundation of the web, and understanding how to work with them using regular expressions is essential for any web developer. Oct 2, 2008 · How can I check if a given string is a valid URL address? My knowledge of regular expressions is basic and doesn't allow me to choose from the hundreds of regular expressions I've already seen on May 22, 2023 · In this article , we’ll explore two ways to extract parameters from a given URL in Java – using regular expressions (regex) , and using the split () method 1. This allows the routing algorithm to internally optimize the structures used for matching and drastically reduce the memory used. Domain: Identifies the website. It is usually preferable to match on path only if you want to match multiple query parameters in an order invariant manner. Once the router is enabled, you can use the expression parameter when you’re creating a Route to specify the Routes. This is what regex redirects are for. Jun 6, 2022 · To check the passed URL route parameters, we will make use of the regex parameter validation Express offers. We suggest using # based UTM links or creating regular expression redirects. In this article, we will discuss how to extract a query string from a URL using regular expressions. It will enhance your URL validation guide process. See Routing in ASP. g. *)}/list")] As you pointed out this doesn't work because it works on the tokenized value of route url. Jul 8, 2011 · Regex for parsing parameters from url Asked 13 years, 5 months ago Modified 13 years, 5 months ago Viewed 2k times Jul 7, 2024 · Learn how to implement and optimize URL pattern matching in Next. A critical feature of this system is **reverse URL lookup**—the ability to generate URLs programmatically using their names (defined via the `name` parameter in `path()` or `re_path()`). NET Core documentation on Regex for information, and Routing Middleware for example. Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. URL matching URLs can be matched either by equality or by regular expression. To get javascript url parameter values by name use a regular expression. Dec 3, 2022 · I will break down this regex, that matches a URL, and hopefully this explanation allows you to successfully analyze other regular expressions by just looking at its components. Alternatively, you can still use good ol’ regular expression by using re_path() instead of path(). In this case, use either: Apply route constraints to your parameters, for example {parameter:int}, {parameter:guid}, {parameter:regex(\\d+)}, etc. site2. Path: Identifies the specific resource within the website. Choosing the the Path regex match type can be particularly useful in cases where the API you’re mocking uses path parameters and you wish to provide a meaningful response to a specific URL pattern regardless of the specific parameter values. This includes URLs involving IP addresses, non-ASCII characters, and protocols like FTP. conf file, set router_flavor = expressions and restart your Kong Gateway. Feb 13, 2012 · What REGEX should I use to extract the following parameter from a url string: /?c=135&a=1341 I basically want to get the value of the a parameter from this string. Fair enough, the capture groups, indicated by () in the regex, are key to understanding what is going on with this code. I dont really know the regex pattern stuff or how to write the patterns and there is no good tutorial or something out there. Jul 11, 2025 · Using Regular Expression To validate a URL in JavaScript using a regular expression (regex), we will use the following pattern to match the common URL format in the below example. There may be multiple examples of valid URLs that may fail this regex validation. com/bobs/your/uncle/5 http://test. In this article, we'll explore how to use regex for URL filtering with examples and tips for creating your own patterns. In this blog, we’ll explore practical solutions to capture and process arbitrary unnamed URL parameters, with a focus on creating readable, maintainable filtering URLs for models. A regular expression to match a valid hostname (also called domain label) in DNS entries. May 5, 2023 · Learn how to create a regular expression that matches URLs with parameters at the end. info/link/?url=http://www. Django provides two primary functions for defining URL patterns: path() and re_path() (formerly url()). views. test. I even know what the problem is: my regex is stumbling on repeated capture groups. The options are: Regex – use a regular expression to match the URL Ignore trailing slashes. If it's homework, then say that because that's your constraint. Because Javascript regex is limited, and this is a special case anyway (beginning with ? instead of &), this will need to be handled differently, depending on what you want to do with the parameters. A complete list of encoded characters is available here. May I ask your help in order to build a regular expression to be used on Google Big Query using REGEXP_EXTRACT that will parse the value of an url parameter identified by a specific key? Let's sup Jul 9, 2017 · Since one of your request URLs contains the other, a regex matching the shorter one will also match the longer one. Here’s the example Otherwise, the regex will see if it finds a substring which matches. detail') What will be the correct syntax if my poll_id is not a number but a string of char Staq supports regex-based redirects for URI patterns but does not support redirects that include query parameters (e. I want an easy way to get the value from a particular parameter. Extracting the Query from a URLProblemYou want to extract the query from a string that holds a URL. Try the following rule. Nov 9, 2025 · The RegExp object is used for matching text with a pattern. In your kong. So this breaks your rule when the URL contains any query string, even if it's just a query separator (?). This guide explains why these cases aren’t supported by Nginx regex rules and provides a solution… Open regex in editor Description Parses a URL query string (ignores anything after #) and returns parameters and values separately. In Oct 20, 2015 · I'm looking for a regular expression to remove a single parameter from a query string, and I want to do it in a single regular expression if possible. Aug 26, 2008 · Please explain to us why this needs to be done with a regex. When it comes to validating, parsing, and normalizing URLs, few tasks are more common or crucial. This specification of URI syntax and semantics is derived from concepts introduced by the World Wide Web global information initiative, whose use of these identifiers dates from 1990 and is described in "Universal Resource Identifiers Oct 27, 2023 · Blocking trigger with Regex wildcard for all types of events, taking into account URL parameters. A more generic function that will fetch all parameters in the URL would look like this. ParseQueryString to extract a NameValueCollection containing each parameter and its value. What do you mean by requires polyfill for the URL API in IE ? A regular expression to match all parameters (anything after the ?) in a URL. Nov 4, 2016 · Write a url path parameter to a query string with haProxy Asked 9 years ago Modified 9 years ago Viewed 11k times May 23, 2009 · Repeating the regular expression search every time the script needs to access a parameter is completely unnecessary, one single function to split up the parameters into an associative-array style object is enough. RFC 3986 URI Generic Syntax January 2005 1. Search, filter and view user submitted regular expressions in the regex library. Web application developers employ URL Rewrite Rules to hide parameters within the URL path structure. Things I've had to consider: 1) params can be out of order 2) only certain params must match Given a query string: "?param1=test1 Sep 12, 2014 · Continue to help good content that is interesting, well-researched, and useful, rise to the top! To gain full voting privileges, Apr 7, 2016 · Solved: I want to extract the field names from a URL's parameters. Matching a Basic URL To match a basic URL in JavaScript using a regular expression, you can use the following pattern: Apr 22, 2019 · 4 Regex is supported through the :regex() parameter. Note that if you are using a regular expression you will need to manage your own trailing slashes in the expression Mar 4, 2025 · This tutorial teaches how to get URL parameters in JavaScript. Oct 16, 2008 · Having URL validation using regular expression is helpful in some scenarios but better not be mixed with vulnerability checks. For detailed information of regular expression syntax, read the regular expression reference. Nov 11, 2023 · Regular expressions (regex) provide powerful string matching capabilities that are useful for routing requests in Nginx. In Java, this can be done by using Pattern. NET libraries to ensure comprehensive URL validation in your C# projects. In the context of matching URLs, regular expressions can be used to validate and extract specific components from a URL string. Jul 23, 2025 · The key represents the parameter and the value represents the data that is being passed through the parameter. May 15, 2023 · Regular expressions provide a powerful and flexible way to define patterns and match specific strings, be it usernames, passwords, phone numbers, or even URLs. Although both are used for routing, they serve slightly different purposes and are suited for different use cases. No it only adds the parameter to a array idk at the moment what to do or better sayed how to do the next steps with it. This matcher looks for a Twitter handle in the URL. This limitation arises because regex rules are applied only to the URI, not to the query string (the part after ?). If you’re using utm with a ?, it truly is a parameter, so it shouldn’t be redirected. In JavaScript, regular expressions are often used to validate user input, such as URLs. Aug 25, 2021 · I'm creating a UTM generator in Power apps. By defining a regular expression pattern that matches each of these components, we can validate whether a given string is a valid URL. To fix this you should look for a match until the beginning of the query string instead, not till the end. Sep 28, 2010 · 785 This question already has answers here: What is the best regular expression to check if a string is a valid URL? (68 answers) Jul 12, 2015 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. In the following file, we have implemented Regex for URL parameters. Mar 24, 2025 · The API provides developers with an easy-to-use, regular expression (regex) -based approach to handling route matching, with built-in support for named parameters, wildcards, and more complex pattern matching that works uniformly across all URL components. 7. To allow empty values, use ([^&]*) instead of ([^&]+). com, . Using regular expressions ¶ If the paths and converters syntax isn’t sufficient for defining your URL patterns, you can also use regular expressions. What's reputation and how do I get it? Instead, you can save this post to reference later. A URL typically consists of several components, including the protocol, domain name, path, and parameters. cs): Regular expressions (regex) are a powerful tool for searching, manipulating, and validating text patterns. We can flexibly construct regex strings to model complex real-world URL variations and edge We can get Javascript query string URL parameters by using JavaScript split, ECMAScript 6 split, reduce or JavaScript URLSearchParams. Aug 28, 2024 · These basic constructs are our building blocks for all regex recipes. A regular expression to match Git repository URLs. A regular expression to extract Youtube video ID from a link. Can be used to filter requests on a specific parameter from the query string. Jul 26, 2016 · I have the following url http://www. Mar 12, 2025 · Choose the URLs for an experiment or campaign to determine where it runs on your site. There's one little hang up that is an edge case, but it's worth the exercise in case there are others that you run into. Capture the specific query parameter you wish to replace using capture groups in regex. +' If the pre-defined path converters don’t suit your needs, you can register custom path converters, which can do tricks like converting a URL parameter straight to a model instance. However sometimes our url changes depending on where the user is coming from thereby appending the querystring parameters which is causing our current regex expression to blow up. Can you explain why those that pass pass and why those that fail fail? What is the logic here? Are only nothing and /home allowed? The Route Constraints in ASP. But I simply can Oct 29, 2015 · Then i used string to URI node followed by Extract URI Info node to get just the query parameters element. Should I be using urlp_reg for this even if the parameter (s) don't have values? Does someone have a regex for validating urls (NOT for finding them inside a text passage)? JavaScript snippet would be preferred. With @include, you can use a regex syntax. In Python regular expressions, the syntax for named regular expression groups is (?P<name>pattern), where name is the name of the group and pattern is some pattern to match. Character Classes Aug 21, 2018 · Whereas simply making the regex pattern ^/api. Jul 15, 2025 · then followed by subdomain of length (2, 256) and last part contains top level domain like . Jun 8, 2023 · Regular expressions, or regex, are powerful tools that developers can use to perform pattern matching and search-and-replace operations on strings. Let's dive into the structure and components of this regex! Oct 14, 2011 · I'm attempting to extract the URL parameters via regex and am sooo close to getting it to work. Web. To trigger off the query parameters, you can either use @include or use @match and also test the URL yourself. We apply the regular expression to the URL query string by means of the . matcher (). For example /YOUR-URL/ and /your-url/ will match. This may be a better solution for what you are doing. You also have a choice of whether to match just the path part of the URL or the path and query together. Explore clear examples and enhance your coding skills today! Apr 4, 2023 · Unfortunately, with ‘Redirection’, via the Import option you cannot specify the ‘Query Parameters’ setting, so importing is not a short cut using this method. match() method. Apr 12, 2022 · It says that the regex preceeding it can be matched as many times possible. You can set the pattern to allow any URL, or to require specific schemes, ports, domains, file paths, parameters, etc. Right Mar 20, 2012 · Is the string you need to parse in the form you supplied, or is it an actual URL with parameters? If it's a URL, you can use System. However, using a regex to match an URL is error prone : better rely on existing frameworks doing it better (there are a lot of potential traps in url, like parameters, unkown domains, url containing ip instead of FastAPI Learn Tutorial - User Guide Query Parameters and String Validations FastAPI allows you to declare additional information and validation for your parameters. Dec 30, 2024 · Validating a URL using regular expressions involves defining a pattern that matches the structure of a URL. So what’s the regex required? That’s why were here! Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. Also, I have to keep the r Jul 8, 2025 · Regular expression syntax cheat sheet This page provides an overall cheat sheet of all the capabilities of RegExp syntax by aggregating the content of the articles in the RegExp guide. If I have 6 optional filters, do I really have to write urls for every combination of th Jun 23, 2017 · Regular expressions (regex or regexp) are extremely useful in extracting information from any text by searching a specific search pattern Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. HttpUtility. However {UNENCODED_URL} may contain query strings too. where possible. Does anyone know of a regular expression I could use to find URLs within a string? I've found a lot of regular expressions on Google for determining if an entire string is a URL but I need to be ab When I look at your rule, I understand that you are looking for a complete match (^$) with URL Path. Aug 8, 2019 · I'm struggling with creating regex to match URL path with query param that could be in any place. I suspect this is why the shorter one is being matched when you'd prefer the longer one. foo will pick up where the requests are being sent to. Try: [HttpGet("{url:regex(. Aug 7, 2024 · Remember to consider both basic validation methods using regular expressions and advanced validation features provided by . Using this example, we can begin to build a basic understanding of regular expressions, what each component represents, how they can be implemented in code to define search patterns, and how they can be used to validate that certain strings match specific criteria. Params ["theThingIWant"], but this strin Jul 2, 2016 · As per various docs and blogs, as well as this question and others, I'm aware that one can validate route parameters by using regular expressions. com Mar 25, 2024 · In this tutorial, we will examine a regular expression for matching a URL. How do you even see the full URL in data studio? Im unable to view anything that comes after the page path. Mar 8, 2018 · Regex to exclude parameters in a URL Asked 7 years, 2 months ago Modified 7 years, 2 months ago Viewed 3k times Nov 22, 2012 · I figured the OP was either running a version where URL processing is not provided or running a thin . This avoids hard-coding URLs, making your codebase more Jun 23, 2023 · Discover easy techniques to extract URL parameters with JavaScript! Breakdown of methods, code snippets, and clear explanations for beginners and pros alike. Advanced URL validation regex patterns for HTTP, HTTPS, and web link verification. This will cover the paths in the URLs which can be long. This practice facilitates comprehensive indexing by search engines while presenting URLs to web browsers in a user-friendly format. 90 @match only works on the protocol/scheme, host, and pathname of a URL. com/bobs/your/uncle/1 http://test. Oct 4, 2024 · Express. Return true if the URL matches with the given regular expression, else return false. Introduction: RegEx – which stands for regular expression – is very popula… Learn how to match HTTP requests in WireMock using URLs, headers, query parameters, request bodies, JSON, XML, cookies, and advanced matchers including regex, JSONPath, and XPath. Use a regular expression pattern to identify query parameters in the URL. For example my raw event might look like this: action=accept host=myserver Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. For every route parameter you can add a regular expression (in brackets) which it should be validated against. In this blog post, we will explore the process of creating a regular expression for a URL in JavaScript, delve into the intricacies of regex, and discuss Aug 19, 2012 · Its not a regex solution, but most languages have a URL library that will parse any URL into its constituent parts. Thankfully, the Import options do allow you to set the ‘regex’ flag, so we can upload a list of URLs as regex statements. THis worked, but im still having an issue seperating each element out of the query parameter field!. In this comprehensive guide, I‘ll […] Whether you need to change parameter values, add subdomains, or adjust the URL structure, regex provides a powerful mechanism for manipulating URLs during the rewriting process. Each key and value are then being set as a key / value pair in the partsSet object. In this tutorial, you'll build a custom route matcher using Angular's UrlMatcher. Built-in URLSearchParams API in JavaScript, regular expressions, and string manipulation techniques are three methods for extracting URL parameters that are covered in this article. This, however, has had me searching for roughly an Aug 10, 2012 · Django url pattern that have a number parameter is: url (r'^polls/ (?P<poll_id>\d+)/$', 'polls. Jun 14, 2023 · The regex to validate a URL presented in this article is not perfect. org etc. For example, you want to extract param=value from - Selection from Regular Expressions Cookbook [Book] Jun 19, 2018 · URL parsing routines are available in many languages and it is recommended to use them as first choice. One alternative is to use catch-all in routing (in Startup. Regular Expression to This regex will match the elements of a URL, including the protocol, subdomain, domain, path, filename, query parameters, and anchor. '^' means match begin of line '$' means match end of line. Introduction A Uniform Resource Identifier (URI) provides a simple and extensible means for identifying a resource. com?a=&b=2. If you're not working with the HTML 5 History API, this is only necessary once per page load. Solution probably is to use combination of an encoder like for encoding Query portion of the URL and for the rest: 5 days ago · Unlike named parameters (which require predefined keys), arbitrary parameters are dynamic and often lack explicit keys, making them tricky to route and process. Dec 28, 2024 · Using Regular Expressions for Parameter Capture While simple path converters like <int:id> are useful, Django also supports more complex URL patterns using regular expressions. js middleware to create more efficient and maintainable server-side logic. For example I can grab "smtp" and "smtp-open-relay" (which we need). That‘s why having go-to URL regex patterns in your toolkit can make development significantly smoother. Net client, or using this as an example to learn regular expressions. Note that the @match approach performs faster. The following regex only validates the most common URLs. Let's take this application as example: Jun 27, 2022 · URL Parameters (also known as Query Parameters or Query String) are a set o key value pairs attached Tagged with javascript, webdev. My redirect with UTM parameters isn’t working When PHP redirects are enabled, URLs with UTM parameters are not redirected. List of Schemes Enter the schemes or protocols the URL can use, delimited by 3 days ago · Implementing multiple optional URL parameters in Tornado routes is straightforward with regex optional groups (()?). A regular expression to extract a domain name or subdomain (with a protocol like HTTPS, HTTP) from a given URL. Upvoting indicates when questions and answers are useful. Learn how to define and use routes in Express. I am trying to come up with a regular expression that matches the following URLs: http://test. If you need more information on a specific topic, please follow the link on the corresponding heading to access the full article or head to the guide. , ?post_type=solution#038;p=1016). Below is the implementation of the above approach: Jan 8, 2025 · Setting up Regex in URL parameters To set up Regex for URL parameters, we can provide regex inside parenthesis just after the name of the parameters. To do so, use re_path() instead of path(). quikStarts – 19 Nov 20 How to parse specific parameters from string urls or API response data using Objective: Learn how to parse specific parameters from string urls or API response data using RegEx in bubble. Feb 24, 2023 · This regular expression is designed to match a wide range of URLs, including those that use different Tagged with regex, beginners, javascript, webdev. NET which is actually a URL. js applications, including route methods, route paths, parameters, and using Router for modular routing. Approach: First, we need to define a regular expression pattern that will match the query string of a URL. By combining regex patterns with handler-side validation and default values, you can build flexible APIs that adapt to client needs. NET Core Web API Application are a set of rules that applied to routing parameters to restrict the parameters. See, also Include and exclude rules. 13. com How do I get the value of the url parameter with regular expressions in javascript? Thanks Jul 23, 2025 · When building web applications with Django, URL routing is a fundamental concept that allows us to direct incoming HTTP requests to the appropriate view function or class. It also allows you to validate and match route parameters using regular expressions (RegEx 5 days ago · Django’s URL routing system is a cornerstone of building dynamic web applications, enabling clean, maintainable URL patterns that map to views. A query string is part of a URL that follows a question mark and contains parameters. For an introduction to regular expressions, read the Regular expressions chapter in the JavaScript guide. I know what to do but how. Here are the URL components: Protocol: Identifies the protocol to access the page or website, which can be https or https. Equality matching on path and query Java: Understanding Regex URL Pattern Regular expressions are powerful tools for pattern matching and text manipulation. So for the last part of the URL regex it is saying the regex of any letter, symbol or number followed by a period or dash can be reapeated indefinetly. from django. Jun 23, 2017 · Regular expressions (regex or regexp) are extremely useful in extracting information from any text by searching a specific search pattern Jan 14, 2024 · JavaScript supports a number of methods, each with advantages and disadvantages, for reading parameters from URLs. Normally, I'd just use Request. You also can use the URL match types available in Optimizely Experimentation or Optimizely Personalization to target a specific URL or a group of URLs. This article explains how to effectively employ regex to target different types of query strings, such as those used for tracking advertising campaigns or promo codes within your website. Oct 18, 2019 · This may be helpful to others. Nov 5, 2016 · I would like to parse url query params intelligently using regex. replace() is passing the entire match as the first parameter of the replacement function and then each of the capture group matches to the following two parameters of the replacement function. In this article, I'll show you the fundamentals of crafting a regular expression for URLs. The second line checks if the RegEx did match at all (if not returnVal will be "null"). Ensure the Optimizely snippet is implemented on all pages you target. Mar 26, 2025 · You should be able to swap out any of the field names (parameters) with title in our regex and target that specific value. In this context, you will learn how to find unusual patterns using Regex. Dec 14, 2022 · Regex for replacing parameter values in a URL (values between = and &) Ask Question Asked 2 years, 11 months ago Modified 2 years, 11 months ago All of the regular expressions that I've found on the web return valid when I use this URL. On this page Objectives Create a sample application Configure your routes for your application Reading the route parameters Test your custom URL matcher Next steps Objectives Implement Angular's UrlMatcher to create a custom route matcher. I've found this useful even in Windows Forms (eg parsing query parameters in ClickOnce deployed applications). Otherwise, there are better language-specific solutions than using a regex. These patterns can be matched against URLs or individual URL components. Use regular expressions (regex) to target URLs containing query strings. In this comprehensive guide, we will provide you with numerous examples and best practices for using regex in Nginx location blocks to tackle complex use cases. Now set this trigger on any tag if you don't want it to fire when the defined query parameters are in the URL. Over 20,000 entries, and counting! Jun 9, 2018 · Also note this regular expression does not cover cases where one of the desired parameters is the first parameter. Here is our current regex expression we are using to grab the route data. For normal URLs where the hash is after the query and the parameters are in May 8, 2025 · I have a view in django that can accept a number of different filter parameters, but they are all optional. May 2, 2018 · Equivalent regular expression: '. They can be particularly useful when it comes to filtering and extracting information from URLs. Redirection will default to the options you specify on the options page. urls import re A regular expression to match one URL parameter in query strings. I've been using this site to test the expressions that I've been finding. Use this pattern to make a field match an internet address as you would enter into a web browser’s address bar. The Case for Using Regex to Validate URLs But why use regex in the first place? What advantages does a regex-based approach offer over simpler URL validation techniques? Flexibility Regex patterns excel at matching textual patterns. js makes it incredibly easy to capture values from URLs using Route Parameters and Query Strings. hocflfpbvrqatapteyjsrzqqykayvdthpayhixymzcctpdtczwzlavankkjriwnegnyxrsffdiu