Regex remove spaces before and after. Simple and advanced regex patterns for removing extra spaces. These patterns are used with the exec() and test() methods of RegExp, and with the match(), matchAll(), replace(), replaceAll(), search(), and split() methods of String. A regular expression to match unnecessary whitespaces in a string (excluding spaces between words). This means that the non-whitespace character will be included in the match, so you need to include it in the replacement. May 10, 2011 · 1 I'm using the regex string below to look for words that in this case are only immediately followed by one space. I have got string like "Path01 /Some folder/ folder (2)" i checked regex Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. */ with the empty string. Im only trying to remove words that are immediately followed by a space, how would i do this. I prefer removing only the whitesoace I actually want to ignore, and simplifying the rest into single spaces. (Note there's an actual space before the dash. What am i missing here? This removes any and all spaces, however i need some left. Sep 10, 2013 · I want to match text after given string. Search, filter and view user submitted regular expressions in the regex library. Can be useful in removing all unexpected white spaces at the beginning or end of strings. Jul 21, 2025 · Regular expressions are patterns used to match character combinations in strings. Oct 17, 2020 · It’s not evaluated as a regex anymore, but as a string literal. Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. An example would be the input being. */ (again with an actual space before the +). 1:234 My cat is bad 14:2 My frog is bad but it loves my garden. Otherwise, it would remove garbage, including spaces, everywhere. Perfect for beginners and anyone looking to improve their data cleaning Sep 17, 2025 · Learn how to remove spaces from strings in PowerShell with practical examples, including removing leading, trailing, extra, and multiple spaces efficiently. In JavaScript, regular expressions are also objects. Over 20,000 entries, and counting! Apr 29, 2013 · The original regex with its \s in the middle of the character class would match the spaces; it only runs into issues because of the ^ anchor at the start. We’ll break down the problem, explain the regex patterns involved, build a reusable function, and test edge cases to ensure robustness. Apr 13, 2018 · I would like to remove all the characters before the first space occurrence for each line. This chapter describes JavaScript regular expressions. Nov 10, 2023 · Since I want to target and delete everything after the song name, if I had 2 or more spaces before "feat" then I can see how using something like \s+feat. Nov 8, 2025 · In this guide, we’ll explore how to efficiently remove extra spaces from a string using JavaScript. ) If there could be multiple spaces before the dash, you can use this variant: / +-. Jan 4, 2011 · Just stripping out all whitespace willy-nilly before applying your regex can make things more ambiguous. So you need to first check for a non-whitespace character. In this case, the text for lines starting with "BookTitle" but before first space: BookTitle:HarryPotter JK Rowling BookTitle:HungerGames Suzanne Collins Jul 7, 2014 · First action - Remove anything after the dash: Replace / -. *$ would achieve that. Mar 2, 2012 · 40 To remove trailing whitespace while also preserving whitespace-only lines, you want the regex to only remove trailing whitespace after non-whitespace characters. Second action - Remove anything up to the dash: Replace /. A complete Python function for cleaning whitespace. . NET, Rust. Oct 17, 2011 · The regex is exactly the same; the site I linked to contains all the info on how to do a regex replace in JavaScript. Jan 26, 2018 · I new in regex and i want to find a good solution for replacing whitespace before or after the / char in my sub string. Sample of initial text: 2:2 My dog is good. Also, you use ^ and $, which mean that the string must start with whatever comes after ^ and must end with whatever comes before $. We would like to show you a description here but the site won’t allow us. It provides a brief overview of each Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. * - / with the empty string. xir wlc wyk dhx ysd ngi bzq wlf lco wgk aus lwh hyu zjv dze