In javascript I check for some characters but I want to allow underscores and slashes but I don't know how.
alias: /^[a-z-Z0-9]{2,35}$/
How to put / and _ so it has not special meaning to Regexes.
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41answers:
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A:
_ has no special meaning at all in Regex.
And if a character has special meaning, you can use \ to "despecialize" it.
alias: /^[a-zA-Z0-9_\/]{2,35}/
(BTW, you can use \w which means [a-zA-Z0-9_], i.e. /^[\w\/]{2,35}/. The \ in \w turns a normal character w to have a special meaning.)
(Edit: Inside the […] the / will not be recognized as a delimiter so it is safe to use /^[\w/]{2,35}/. Thanks Andy E for showing this.)
KennyTM
2010-03-09 10:52:04
You don't actually need to escape the `/` inside square brackets
Andy E
2010-03-09 10:53:54
Like this then = alias: /^[/w/d\/_]{2,35}$/
poo
2010-03-09 10:59:51
@Andy: You need to escape it because the delimiter is `/`.
KennyTM
2010-03-09 11:02:22
@KennyTM: It doesn't matter. `/test[/]/i` is a perfectly valid regular expression in JavaScript.
Andy E
2010-03-09 11:21:19