Javascript regex remove all special characters except semi colon
2 Answers Sorted by 16 You can use a regex that removes anything that isn t an alpha character or a semicolon like this A Za z g const str ABC D A b c Qwerty const result str replace A Za z g console log result Share Improve this answer Follow edited Jun 2 2022 at 19 33 answered May 1 2012 at 22 43 jfriend00
Regular expression syntax sheet JavaScript MDN, Assertions include boundaries which indicate the beginnings and endings of lines and words and other patterns indicating in some way that a match is possible including look ahead look behind and conditional expressions Boundary type assertions Other assertions Note The character may also be used as a quantifier Groups and backreferences
Regular expressions JavaScript MDN MDN Web Docs
A regular expression pattern is composed of simple characters such as abc or a combination of simple and special characters such as ab c or Chapter d d The last example includes parentheses which are used as a memory device The match made with this part of the pattern is remembered for later use as described in Using groups
Remove Special Characters From a String in JavaScript, To remove special characters from a string in JavaScript use the String replace method Match the special characters with a RegEx pattern and replace them with empty quotes The String replace method has the following syntax String replace pattern replacement
Sets and ranges The Modern JavaScript Tutorial
Sets and ranges The Modern JavaScript Tutorial, In other words all special characters are allowed without escaping except when they mean something for square brackets A dot inside square brackets means just a dot The pattern would look for one of characters either a dot or a comma In the example below the regexp looks for one of the characters
Regular Expressions Regex Special Characters In JavaScript
Escaping special characters The Modern JavaScript Tutorial
Escaping special characters The Modern JavaScript Tutorial New RegExp If we are creating a regular expression with new RegExp then we don t have to escape but need to do some other escaping For instance consider this let regexp new RegExp d d alert Chapter 5 1 match regexp null
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The regular expression is passed as the first parameter that states that this replace method should replace all characters except numbers and alphabets The second parameter is the replacement nothing in our case Output Frequently Asked Javascript replace multiple characters in string Javascript String remove special characters thisPointer. The replace method will return a new string that doesn t contain any special characters index js const str hello 123 WORLD const noSpecialCharacters str replace a zA Z0 9 g console log noSpecialCharacters hello 123 WORLD The first argument we passed to the String replace method is a regular expression Remove all characters except Ask ion Asked 6 years 11 months ago Modified 6 years 9 months ago Viewed 8k times 3 My code takes a string and replaces all characters which are not English letters Numbers I have tested it and it seems to generally work well enough But it may have some catastrophic bug in it and or can be simplified
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