JavaScript RegExp \t Metacharacter

JavaScript RegExp . Metacharacter

The . metacharacter in JavaScript regular expressions matches any single character except for a newline (\n) or other line terminators, such as \r. It is widely used as a wildcard to represent "any character."JavaScriptlet regex = /c.t/; let str1 = "cat"; let str2 = "cut"; console.log(regex.test(str

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JavaScript RegExp \b Metacharacter

The \b metacharacter in JavaScript regular expressions represents a word boundary, allowing you to match positions where a word begins or ends. A word boundary is the position between a word character (\w: letters, digits, or underscores) and a non-word character (\W: everything else, including spac

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JavaScript RegExp \B Metacharacter

The \B metacharacter in JavaScript regular expressions matches a position where a word boundary does not exist. It is essentially the opposite of the \b (word boundary) metacharacter.JavaScriptlet regex = /\Bcat\B/; let str1 = "concat"; let str2 = "cat"; console.log(regex.test(str1)); console.log(re

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JavaScript RegExp \d Metacharacter

In JavaScript regular expressions, the \d metacharacter is used to match any digit character (0-9). This is a shorthand for the character class [0-9], which matches any single character within the specified range.To begin, let's look at a simple example where we use \d to match digits in a string.Ja

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JavaScript RegExp \D( non-digit characters) Metacharacter

The RegExp \D Metacharacter in JavaScript is used to search non-digit characters i.e all the characters except digits. It is the same as [^0-9]. JavaScriptlet str = "a1234g5g5"; let regex = /\D/g; let match = str.match(regex); console.log("Found " + match.length + " matches: " + match);OutputFound 3

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JavaScript RegExp \f Metacharacter

The \f metacharacter in JavaScript regular expressions matches a form feed character. Form feed (\f) is a control character used to indicate a page break in text. While it is rare in modern applications, it can still appear in old documents or text files.JavaScriptlet regex = /\f/; let str1 = "Hello

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JavaScript RegExp \n Metacharacter

The \n metacharacter in JavaScript regular expressions matches a newline character. It is used to identify line breaks in strings, enabling developers to process multi-line text effectively.JavaScriptlet regex = /\n/; let str = "Hello\nWorld"; console.log(regex.test(str));Outputtrue The pattern \n d

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JavaScript RegExp \v (vertical tab character) Metacharacter

The RegExp \v Metacharacter in JavaScript is used to find the vertical tab character. If it is found it returns the position else it returns -1. JavaScriptlet str = "G\vFG@_123_$"; let regex = /\v/; let match = str.search(regex); if (match == -1) { console.log("No vertical tab character present. ");

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JavaScript RegExp \t Metacharacter

The RegExp \t Metacharacter in JavaScript is used to find the tab character. If it is found it returns the position else it returns -1. JavaScriptlet str = "GFG\t@_123_$"; let regex = /\t/; let match = str.search(regex); if (match == -1) { console.log("No tab character present. "); } else { console.

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JavaScript RegExp \s Metacharacter

The \s metacharacter in JavaScript regular expressions matches any whitespace character. This includes spaces, tabs, form feeds, line breaks, and other whitespace characters as defined in Unicode.JavaScriptlet regex = /\s/; let str1 = "Hello World"; let str2 = "HelloWorld"; console.log(regex.test(st

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JavaScript RegExp \r Metacharacter

The \r metacharacter in JavaScript regular expressions matches a carriage return character. A carriage return is a special control character (\r) with the ASCII code 13, often used to represent the end of a line in text files created on older operating systems (e.g., Windows uses \r\n for line break

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JavaScript | RegExp \uxxxx Metacharacter

The RegExp \uxxxx Metacharacter in JavaScript is used to find the unicode character specified by a hexadecimal number xxxx. If match is found it returns the word else it returns NULL. Syntax: /\uxxxx/ or new RegExp("\\uxxxx") Syntax with modifiers: /\uxxxx/g or new RegExp("\\uxxxx", "g") Example 1:

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JavaScript RegExp \W Metacharacter

The \W metacharacter in JavaScript regular expressions matches any character that is not a word character. A word character is defined as:Any alphanumeric character (a-z, A-Z, 0-9)The underscore (_)Essentially, \W matches anything that is not a letter, digit, or underscore.JavaScriptlet regex = /\W/

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JavaScript RegExp \w Metacharacter

The \w metacharacter in JavaScript regular expressions matches any word character. A word character is defined as:Any alphanumeric character (letters a-z, A-Z, numbers 0-9)The underscore character (_)It does not match spaces, punctuation, or other non-alphanumeric characters.JavaScriptlet regex = /\

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JavaScript | RegExp \xxx Metacharacter

The RegExp \xxx Metacharacter in JavaScript is used to find the character specified by an octal number xxx. If the match is found it returns the character else it returns NULL. Syntax: /\xxx/ or new RegExp("\\xxx") Syntax with modifiers: /\xxx/g or new RegExp("\\xxx", "g") Example 1: This example re

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JavaScript RegExp \0 Metacharacter

The RegExp \0 Metacharacter in JavaScript is used to find the NULL character. If it is found it returns the position else it returns -1.JavaScriptlet str = "Geeksfo\0rGeeks@_123_$"; let regex = /\0/; let match = str.search(regex); if (match == -1) { console.log("No Null characters present. "); } els

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JavaScript RegExp \t Metacharacter

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JavaScript RegExp \t Metacharacter

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