Valid Url Regex Javascript

For example, we can use Regular Expression to check whether the user input is a valid Social Security number, a valid phone number or a valid email number, etc. A common example of this would be checking the strength of a password. This tool was created to help developers learn, test, and write regular expressions. validate() needs to be called on the form before checking it using this method. Tony Patton also explores how JavaScript's regular expression simplifies data validation. input で指定された文字列に対してマッチングを行います。. It can be useful to validate an EMAIL address or an IP address. Java regex tester. Custom Validation Using AngularJS. A “Regular Expression”, or RegEx, is a set of. test call advances regexp. Use Online Javascript Validator to validate javascript code and find errors and warnings of your code that can be fixed. Input Validation Cheat Sheet. It matches the features and performance of native editors such as Sublime, Vim and TextMate. ) This one focuses on being fast, lightweight, and relatively 'real-world'. Regex usando javascript per restituire solo i numbers; dividere e sostituire parole unicode in javascript con regex; corrisponde "//" commenti con regex ma non all'interno di un preventsvo; Il regexp semplice di Javascript non funziona; come estrarre numbers galleggianti da stringhe in javascript; Php regex al javascript regex. com is a site that aims to help programmers to find out how to use regular expressions and provide an easy-to-use resource for those just looking for. @strongant https://wwwww. Regular Expression to This regex will match the elements of a URL, including the protocol, subdomain, domain, path, filename, query parameters, and anchor. Red Hat Enterprise Linux 3 CentOS Linux 3 Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 Race condition in cpio 2. How to: Verify that strings are in valid email format. Spoiler: it’s quite a lot — there are more RegExp-related proposals currently advancing through the TC39 standardization process than there have been updates to RegExp in the history of ECMAScript!. Users can add, edit, rate, and test regular expressions. There are two ways to access a checkbox, depending on whether it it unique in the form (distinct name), or part of a group of checkboxes, all sharing the same. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. When you search for data in a text, you can use this search pattern to describe what you are searching for. CVE version: 20061101 ===== Name: CVE-1999-0002 Status: Entry Reference: BID:121 Reference: URL:http://www. I've posted two improved versions of my original URL-matching regex pattern on Gist. An IP address (or Internet Protocol address) is an identifier assigned to a computer or other device in a TCP/IP network to locate the device on the network. 0: Distribution. 0_01/jre\ gtint :tL;tH=f %Jn! [email protected]@ Wrote%dof%d if($compAFM){ -ktkeyboardtype =zL" filesystem-list \renewcommand{\theequation}{\#} L;==_1 =JU* L9cHf lp. form validation, javascript form validation using regular expression In this tutorial you will see how to use regular expressions to validate. The following code shows the implementation of this validate() function. It's configuration and usage is similar to the Laravel PHP framework and make validation as easy as one line. Much cleaner API now. Learn to validate Twitter username using Regular Expression in JavaScript. When you author management packs, you may have to include regular expression matching in discoveries and groups. Throughout the documentation, two terms are used very often, so it's important that you know their meaning in the context of the validation plugin: method: A validation method implements the logic to validate an element, like an email method that checks for the right format of a text input's value. This tool was created to help developers learn, test, and write regular expressions. Hey your regexp is pretty good for Canadian zipcode but i just a question since you are saying Canadian Zip code can't contain certain letters such as: "D,F,I,O,Q or U". Let's check whether or not a string is a time in 12:34 format. * (bug 3901) Lang, hreflang attribs added to sidebar interlanguage links for screen readers. Type: boolean Default: true. The selector is used to identify a block of properties in the translation file, take the following for example. PHP supports regular expressions through the use of the PCRE (Perl Compatible Regular Expressions) library which is enabled in almost all PHP installations. You can also use a Matcher to search for the same regular expression in different texts. regex API for pattern matching with regular expressions. One of the best (and maybe only valid) use-cases is when you would like to teach regexes. I'll cover the following topics in the code samples below: JavaScript Regular Expression, URL Validation, and Valid Expression. For this example, we have a PHP script that checks the email in the database. net too? Here's what got:. Validating a HTML form in Javascript is almost the part of every web application. A Computer Science portal for geeks. To shorten the resulting regex, this ls32 component was factored out with no loss of accuracy. When calling a RegExp constructor, you have to double each of the two backslashes in the string argument passed to the constructor, like this: "\\\\". It supports JavaScript File URL, Upload file and verifies JavaScript. Nobody will type/remember "PunyCode" URLs and the regex already supports international UTF-8. com - The first Regular Expression Library on the Web!. Its about validate. Validate that an attribute has a valid URL format. 3 / 2011-05-01 +===== + + * Updated SahiClient with new version, which is faster and cleaner with it's. The JavaScript replace() function takes two arguments:. Validation to Allow only Alphabets and Space using Regular Expression and JavaScript. I know what an URL is and how to format it, but how many of our clients know that? I think the field is to restrictive as it requires http and www to validate that field. Useful with RegExp#test to check if a string is a URL. \$\begingroup\$ See this StackOverflow post for more insight on using Regex to validate e-mail addresses: Using a regular expression to validate an email address - There is no way to practically validate e-mail addresses by regex alone, just send an e-mail, and see if it works. Regular Expression Generator. www has no special meaning. For an example, see Perform Case-Insensitive Regular Expression Match. Return true if the value is a valid date. In this tutorial we’ll explore HTML’s pattern attribute, using it to help us customize the way we validate our forms. I need to validate the incoming string for text " string"; Now I need to write a regular expression that will tell me, whether this string contains tag or not. Since the info I needed was inside a tag, my regular expression works fine for that type of processing. Matches any character except \n. but these is not correct. The validation process evaluates whether the input value is in the correct format before submitting it. For more information, see Regular Expression Options. Contribute to jquense/yup development by creating an account on GitHub. An Improved Liberal, Accurate Regex Pattern for Matching URLs Tuesday, 27 July 2010 Update, February 2014. The name can be a set of 'atoms' separated by dots. The balanced groupings is a Microsoft innovation to regular expressions, so it's not something I've played around with much. HTML5 Form Validation. Regex Tester isn't optimized for mobile devices yet. Options Using with form field. The Apache server’s mod_rewrite module gives you the ability to transparently redirect one URL to another, without the user’s knowledge. below is a class that does parsing and validation of urls as required. noConflict(true); function ss. This is similar to our credit card validation script, where it will tell you if the string of numbers COULD be legitimate. This will allow you to extend validate. The best best way to validate URL with JS is to make separate function and call with URL string as function Parameter. Regular Expression to validate file path and extension. URLs refers to web pages (http), file transfers (ftp), email (mailto), and database path (JDBC), etc. Regular Expression Library provides a searchable database of regular expressions. HTML Forms part of the data body and will not be visible in the URL box in the user’s browser. Since the info I needed was inside a tag, my regular expression works fine for that type of processing. Browse other questions tagged bash regular-expression search or ask your own question. You Can Check it by using following code - [code]var url = 'http://www. This regular expression pattern is widely use in for different file extensive checking. Domain name regular expression example. For an example, see Perform Case-Insensitive Regular Expression Match. We emphasize libraries that work well with the C++ Standard Library. Using the html attributes we have available as well as some hard-working, built-in JavaScript functions, we can do simple client-side form validation. While Angular does provide various input field validators (i. If we are matching phone numbers for example, we don't want to validate the letters "(abc) def-ghij" as being a valid number! There is a method for matching specific characters using regular expressions, by defining them inside square brackets. Users can add, edit, rate, and test regular expressions. Please visit XSS (Cross Site Scripting) Prevention Cheat Sheet to see the latest version of the cheat sheet. Learn more about regular expressions in javascript. Regular expressions are an extremely powerful tool for manipulating text and data. The code The first thing we need to do is set two variables: one is the URL to be validated, the second is the Regular Expression. 12/10/2018; 6 minutes to read +11; In this article. Both anchors together ^$ are often used to test whether or not a string fully matches the pattern. email), there are use cases where you will need to create your own validators. This tutorial will helps you how to validate a mobile number in Java Script. Please don't try to do this. In a nutshell: regular expressions (regex) are like a Swiss army knife for modifying strings of just about anything. RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). The JavaScript RegExp class represents regular expressions, and both String and RegExp define methods that use regular expressions to perform powerful pattern-matching and search-and-replace functions on text. Lookbehind was a major omission in JavaScript's regex syntax for the longest time. There are two kinds of functions: user-defined static values (or variables), and built-in functions. it's good if you want to check user input, and don't need to parse out the URI/URL into chunks. Beautiful Soup is a Python library for pulling data out of HTML and XML files. My validation function looks like this: function bl(s){ if. Another approach is to use a simple test plan to test the regular expressions. No forward slashes should be specified around the pattern. Regex - Search for valid urls inside archive. A regular expression can be a single character, or a more complicated pattern. Creating objects. Regex para la validation del website o la URL. 1 What can functions do¶. Many of these features are available in the XRegExp library for JavaScript. Regular expression tester. \$\endgroup\$ – rolfl Oct 9 '14 at 19:15. This is simply an example of how I'd like the validation to. For those rare occurrences when you do need to parse the query string on the front end, there are numerous ways to parse a query string into an object with each parameter being a property of that object. I need to have a good regex for URL validation in javascript. *FREE* shipping on qualifying offers. regex package. Using JavaScript to validate date and time input fields. If you need a refresher on how Regular Expressions work, check out our Interactive Tutorial first!. Disclaimer: This site is started with intent to serve the ASP. Use it for finding email addresses or checking if something is email like. With that said, there might be cases when you cannot use those modules and you'd like to implement your own solution using regular expressions. Another useful validation feature is the pattern attribute, which expects a Regular Expression as its value. In this tutorial we’ll build a simple form with client-side JavaScript validation. Today, we'll review. What regular expression can I use to match an IP address? you'll need to enable extended regular expressions: Surely they're all valid IPs, but I guess that's. Basic Form Validation. 28-rc1 allows attackers to cause a denial of service (memory corruption or system crash) via an hfs filesystem image with an invalid catalog namelength field, a related. Honestly I always have to refer to the documentation or to past projects I've developed, just to grab the regex I need. How does a Regular Expression look like. The most basic schema is a blank JSON object, which constrains nothing, allows anything, and describes nothing: You can apply constraints on an instance by adding validation keywords to the schema. when i type https://www. You can use this control to check whether a user has entered, for example, a valid e-mail address, telephone number, or username or passwo. A JavaScript toolkit that saves you time and scales with your development process. Note: If you want to validate your CSS style sheet embedded in an (X)HTML document, you should first check that the (X)HTML you use is valid. Spoiler: it’s quite a lot — there are more RegExp-related proposals currently advancing through the TC39 standardization process than there have been updates to RegExp in the history of ECMAScript!. The regular expression below shows the complexity, although its inclusion on this page has caused some confusion: I did not write this regular expression by hand. It can prevent people from leaving fields blank, from entering too little or too much or from using invalid characters. Domain Name Validation - provides domain name and IANA TLD validation. Online regex tester, debugger with highlighting for PHP, PCRE, Python, Golang and JavaScript. When you author management packs, you may have to include regular expression matching in discoveries and groups. Regex Tester isn't optimized for mobile devices yet. For instance, here we call regexp. URLs refers to web pages (http), file transfers (ftp), email (mailto), and database path (JDBC), etc. email validation Validate datetime Match an email address search params Regex 1 pcr-email Railcar Number Checks the length of number and not starts with 0 url Strip non-digits Validate an ip address markdown fenced code block Test Kundennummern Match IDs uk postcodes grabMac HCL_HCRG_ASHX_CROSSDOMAIN veeam Success Vasya regex. Help to translate the content of this tutorial to your language!. These input types are simple, one or two-word commands that function in similar ways to RegEx but allow for more flexibility. wpd" appended to the end of the file name. Validates the XML string/file against the specified XSD string/file. Regular expressions should be used for more complex tests. HTML input element control. Replies are listed 'Best First'. JavaScript, Python, and PCRE. I've just updated parseUri. The validator checks for well formedness first, meaning that your XML file must be parsable using a DOM/SAX parser, and only then does it validate your XML against the XML Schema. 2) a valid type array, apply multiple validate rules. The cause for this will likely be the same as what was fixed in #23605 for the `esc_url()` function, but this is in a separate location so I'm not 100% if the same fix will apply. If you want it to be valid for all sub-domains of example. w3schools is a pattern (to be used in a search). One line of regex can easily replace several dozen lines of programming codes. But, have you ever needed to valid an URL? We can do it quite easily using Regular Expressions and JavaScript. For current info see RELEASE-NOTES. I'll cover the following topics in the code samples below: JavaScript Regular Expression, URL Validation, and Valid Expression. Input control follows HTML5 input types and polyfills the HTML5 validation behavior for older browsers. Using JavaScript to confirm username and password input format. JavaScript, Python, and PCRE. Creating objects. Another approach is to use a simple test plan to test the regular expressions. Supported by JavaScript, maybe other languages Regular Expressions For URI Validation/Parsing - Regular Expression - Snipplr Social Snippet Repository code snippets. In Python a regular expression search is typically written as: match = re. A set is an unordered collection of distinct elements having specific common properties. The most basic schema is a blank JSON object, which constrains nothing, allows anything, and describes nothing: You can apply constraints on an instance by adding validation keywords to the schema. Extract regexp - extracts matching parts into a table with each regexp group as a column. RegexOne provides a set of interactive lessons and exercises to help you learn regular expressions RegexOne - Learn Regular Expressions - Problem 8: Parsing and extracting data from a URL Regex One Learn Regular Expressions with simple, interactive exercises. In order to see table list you must populate File/URL and other required connection parameters on the parameter grid. Search Parents/Guardians Service Learning Projects Book Fair! Grade 3. CustomValidator - Checks the form field's value against custom validation logic that you, the developer, provide. Validating URL using C# with Regular Expression with and without http. A regular expression is a sequence of characters that define a search pattern. {"bugs":[{"bugid":633540,"firstseen":"2017-10-05T09:50:30. 0 Vector works in Internet Explorer. Email validation within a form in PHP In an input field we can verify the email address entered is in correct format or not using PHP eregi function. Useful with RegExp#test to check if a string is a URL. In this article I will explain how to apply validation for checking for a valid URL using AngularJS. Validating an avatar URL. For example, we can use Regular Expression to check whether the user input is a valid Social Security number, a valid phone number or a valid email number, etc. jsoup is a Java library for working with real-world HTML. ?+=&%@!\-\/]))?/; return pattern. Have a look at the way the HTML is coded:. This is building on my previous post on how to use regular expressions with jQuery. Regular expressions are an extremely powerful tool for manipulating text and data. Regex can be used for a wide verity of needs like validating an email address or phone number but it’s a very bad practice to limit the XSS attacks. Online regular expression testing for Java using java. * (bug 30774) mediawiki. match(/your regular expression goes here/); The regular expression needs to. com tag:blogger. You can then adapt this form to your own requirements. string: null: If selector is provided, editable will be delegated to the specified targets. Join the community of millions of developers who build compelling user interfaces with Angular. Specifically we are going to use the. 0 is still a valid ip address. Min Length and Max Length Validation Using AngularJS. I ended up writing something like: <*?script. Test PHP regular expressions live in your browser and generate sample code for preg_match, preg_match_all, preg_replace, preg_grep, and preg_split!. RegularExpressions namespace. Validating forms frontend have never been so powerful and easy. To validate for strong passwords we will use RegularExpressionValidator with REGEX. It is written entirely in JavaScript, HTML, and CSS to provide live validation and match feedback on your regexs. a) # line of code can be reduced. Code Conventions for the JavaScript Programming Language. If the search is successful, search() returns a match object or None otherwise. Using regular. \$\endgroup\$ - rolfl Oct 9 '14 at 19:15. Return true, if the value is a valid url. First let us see how to do a basic form validation. com - The first Regular Expression Library on the Web!. scrape and parse HTML from a URL, file, or string. /w3schools/i is a regular expression. In this article I'll provide an Util class full of some regular expressions for common input validation. Regular Expressions are supported by many languages. I hope this Regex Cheat-sheet will provide such aid for you. options exact. The form will include one text field called “Your Name”, and a submit button. Supported by JavaScript, maybe other languages Regular Expressions For URI Validation/Parsing - Regular Expression - Snipplr Social Snippet Repository code snippets. Sun added support for regular expression in Java 1. The Go Programming Language This page intentionally left blank The Go Programming Language Alan A. Online regular expression testing for Java using java. Email validation using Regular Expression in Perl. But will also match 999. Validate Http and Https Url using RegularExpression (Regex) in JavaScript; Validate Http and Https. It has the following features: It shows whether a regular expression matches a particular target string. Quickly test and debug your regex. Zip code validation for US and Canada is most common validation required for any web site where you have address input. I know what an URL is and how to format it, but how many of our clients know that? I think the field is to restrictive as it requires http and www to validate that field. The name can be a set of 'atoms' separated by dots. Only the format must be valid, not the actual date, eg 30/30/2008 is a valid date. The field under validation must be a valid RFC 4122 (version 1, 3, 4, or 5) universally unique identifier (UUID). How to validate an email address using a regular expression? Which equals operator(== vs===) should be used in JavaScript comparisons? Regular expression to match a line that doesn't contain a word? Get the current URL with JavaScript? What does “use strict” do in JavaScript, and what is the reasoning behind it?. Description: Makes the element require a valid url. Implementing validation with regular expressions somewhat pushes the limits of what it is sensible to do with regular expressions, although Perl copes well. Many of these features are available in the XRegExp library for JavaScript. You could count the sections and see how many characters are in each but why bother. www has no special meaning. Working examples. NET regex engine, featuring a comprehensive. Another useful validation feature is the pattern attribute, which expects a Regular Expression as its value. Regular Expression- Regular expression is a sequence of character(s) mainly used to find and replace patterns in a string or file. In enhancement, stick to books that have easy coloring pages, which have well-spaced pictures for example coloring and ensure you have enough pastel and also coloring pencils to for all. Creating objects. Message-ID: 1348335283. enforce valid JSDoc comments (valid-jsdoc) The --fix option on the command line can automatically fix some of the problems reported by this rule. Creating a correct regular expression is hard! (only 1 out of 13 regexs were valid for all cases). email validation Validate datetime Match an email address search params Regex 1 pcr-email Railcar Number Checks the length of number and not starts with 0 url Strip non-digits Validate an ip address markdown fenced code block Test Kundennummern Match IDs uk postcodes grabMac HCL_HCRG_ASHX_CROSSDOMAIN veeam Success Vasya regex. The rule of thumb is that simple regular expressions are simple to read and write, while complex regular expressions can quickly turn into a mess if you don't deeply grasp the basics. Is there an easy way to check if a specified url is a valid one (both the format should be valid but also the specified path / file is available)? Thanks! · By URL I. com" is valid. It is JavaScript based and uses XRegExp library for enhanced features. A caret must be placed at the beginning of a regular expression and signifies that the string starts with the character(s) or sequence placed after the caret. Unicode is a large character set—regular expression engines that are only adapted to handle small character sets will not scale well. Introduction: Here I will explain how to bind gridview with datatable in asp. I don't know if you'll ever be able to throw all your JavaScript form validation out the window, but HTML5 has sure made it a whole lot easier!. Introductory Guide to Regular Expressions Always wanted to learn about Regular Expressions in JavaScript? With this comprehensive yet gentle tutorial on the subject, you'll be on your way to slashing and validating string input using Regular Expressions in no time!. The Cheat Sheet Series project has been moved to GitHub!. This free regular expression tester lets you test your regular expressions against any entry of your choice and clearly highlights all matches. JavaScript has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions. Regular Expression URI Validation. API Science’s JavaScript validation capability provides you with the opportunity to apply regular expressions to analyze the content of an API’s response body, even down to the level of the text that’s in a particular JSON field. How to remove invalid characters from a string using regular expression in c# You can remove the set of the characters with the help of String. Zytrax Tech Stuff - Regular Expressions - A Gentle Introduction, Intermediate User Guide and Tutorial. Basically it's a check if one string equals another. There are various companies in financial market offer credit cards. In this case, both the strings matching the regex and the value "/path/" will be displayed. This is a great little library -- thanks!. The search pattern can be anything from a simple character, a fixed string or a complex expression containing special characters describing the pattern. [0-9a-fA-F]. The balanced groupings is a Microsoft innovation to regular expressions, so it's not something I've played around with much. But will also match 999. Return Value. Data Validation¶ Data validation is an important part of any application, as it helps to make sure that the data in a Model conforms to the business rules of the application. This specification defines the generic URI syntax and a process for resolving URI references that might be in relative form, along with guidelines and security considerations for the use of URIs on the Internet. Regular expressions are a formal way to describe string patterns. To efficiently define a group URLs you’ll will need some knowledge of RegEx. test(url); }. Don't worry though, that article is not required. Today, we'll review. Validating Domain Names Problem You want to check whether a string looks like it may be a valid, fully qualified domain name, or find such domain names in longer … - Selection from Regular Expressions Cookbook, 2nd Edition [Book]. Option Description Syntax Restrictions; i: Case insensitivity to match upper and lower cases. JavaScript RegExp Example: Regular Expression Tester. Credit Card Number validation. test twice on the same text, and the second time fails:. initialHeight=initialHeight;this. $ matches the end of a line. regular expression ("regex"): a description of a pattern of text can test whether a string matches the expression's pattern can use a regex to search/replace characters in a string regular expressions are extremely powerful but tough to read (the above regular expression matches email addresses) regular expressions occur in many places:. The standard C++ library provides support for regular expressions in the header through a series of operations. But this takes time, so If mail has to be sent to many, then use asynchronous mails. Then in the code behind I write the code to send the mail and. Regular Expression Generator for languages Perl PHP Python Java Javascript ColdFusion C C++ Ruby VB VBScript JSharp CSharp C++. Validating URLs require complex regular expressions. 999 as if it were a valid IP address. {"bugs":[{"bugid":633540,"firstseen":"2017-10-05T09:50:30. This is building on my previous post on how to use regular expressions with jQuery. get-urls - Get all. GUID Test and Validate. In the following example I am using the. But it does not mean that the domain name is actually registered and working. Specifically we are going to use the. I am most likely inclined to also remove IPV4 validation from the base regex, nobody remember these numbers and they will most likely change in time. using System. " /Open Fold Strings = "Do While" "If" "ElseIf" "Function" "Sub" "With" "For" "Select Case" "Case Else" "Case" "Else" /Close Fold Strings = "ElseIf" "End If" "End Function" "End Sub" "End With" "Loop" "Next" "Wend" "End Select" "Case Else" "Case" "Else" /Ignore Fold Strings = "Exit Function" "Exit Sub" "Declare Function" /C1"Functions" STYLE. now if you copy and paste or maybe just take these letters out of the 3rd and 5th char. For simple cases, input validation is declarative, meaning you simply tell Tapestry what validations to apply to a given field, and it takes care of it on the server and (optionally) on the client as well. 0 Vector works in Internet Explorer. With that said, there might be cases when you cannot use those modules and you'd like to implement your own solution using regular expressions. Regular expressions may also be necessary for pattern matching in expression criteria in monitors and rules. An iterative solution, with a for-loop, may be best in many cases: always test methods. Example: Sets up validation for a form, then checks if the form is valid when clicking a button. Or give this example a try. For a tutorial about Regular Expressions, read our JavaScript RegExp Tutorial. I ended up writing something like: <*?script. UPDATED 5/15/19! After some time I thought about publishing this article (see my previous tutorial) with the regex I used most in the projects on which I was involved. Conditionally Adding Rules Validating When Present. Learn more about regular expressions in javascript. In this post, I demonstrate this capability. The URL validator ensures that the input is a valid URL. Query string parameters have been incredibly useful on the server side since the internet took liftoff, but it wasn't until AJAX-driven web apps became popular that we relied too much on them on the client side. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: