Grosso modo, STEWRE se usa de la siguiente forma: En el área de trabajo de la izquierda se escribe el texto que se desee, en el área de previsualización aparecerá formateado y el área de trabajo de la derecha se reserva para ver los resultados al filtrar el texto con las expresiones regulares. Los resultados de las expresiones regulares escritas en "Filtrar RegEx" se muestran conforme se escribe la expresión, ayudando al usuario a no cometer errores y a comprender cómo funciona la expresión que está escribiendo.
Detalles técnicos:
- Lenguaje: HTML, CSS y JavaScript
- Plataforma: Cualquiera con un navegador web moderno
- Paradigma: Programación Web
- Aprendizaje de: Expresiones Regulares y Tecnologías Web
- Enlaces: código fuente, manual de usuario
- Año: 2013
Usa STEWRE online
Expression | Description |
---|---|
[abc] | Find any character between the brackets |
[^abc] | Find any character not between the brackets |
[0-9] | Find any digit from 0 to 9 |
[A-Z] | Find any character from uppercase A to uppercase Z |
[a-z] | Find any character from lowercase a to lowercase z |
[A-z] | Find any character from uppercase A to lowercase z |
[adgk] | Find any character in the given set |
[^adgk] | Find any character outside the given set |
(red|blue|green) | Find any of the alternatives specified |
Metacharacter | Description |
. | Find a single character, except newline or line terminator |
\w | Find a word character |
\W | Find a non-word character |
\d | Find a digit |
\D | Find a non-digit character |
\s | Find a whitespace character |
\S | Find a non-whitespace character |
\b | Find a match at the beginning/end of a word |
\B | Find a match not at the beginning/end of a word |
\0 | Find a NUL character |
\n | Find a new line character |
\f | Find a form feed character |
\r | Find a carriage return character |
\t | Find a tab character |
\v | Find a vertical tab character |
\xxx | Find the character specified by an octal number xxx |
\xdd | Find the character specified by a hexadecimal number dd |
\uxxxx | Find the Unicode character specified by a hexadecimal number xxxx |
Quantifier | Description |
n+ | Matches any string that contains at least one n |
n* | Matches any string that contains zero or more occurrences of n |
n? | Matches any string that contains zero or one occurrences of n |
n{X} | Matches any string that contains a sequence of X n's |
n{X,Y} | Matches any string that contains a sequence of X to Y n's |
n{X,} | Matches any string that contains a sequence of at least X n's |
n$ | Matches any string with n at the end of it |
^n | Matches any string with n at the beginning of it |
?=n | Matches any string that is followed by a specific string n |
?!n | Matches any string that is not followed by a specific string n |
www.w3schools.com/jsref/jsref_obj_regexp.asp |
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