Email regular expression Javascript [closed] - javascript

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I have a email regex . But i want to allow only 1 to 20 characters before the # symbol in the regex.
([\w-\"]+(?:\.[\w-\"]+))#((?:[\w-]+\.)*\w[\w-]{0,255})\.([a-z]{2,6}(?:\.[a-z]{2})?)
Any help would be appreciated.

You're better off checking outside of the regex, but there happens to be a way in this specific case:
(?=[^#]{1,20}#)([\w-\"]+(?:\.[\w-\"]+))#...

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I want Regular Expression For this Format(Years/M or Days/F) for ex:24Years/M or 24Days/F [closed]

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Any one please help me.
the user enter age in textbox but the age format should be Years/M or Years/F or Days/M or Days/F
First number between 1 to 9, Optionally more numbers between 0-9, then years or days, then slash, then gender.
^[1-9](?:[0-9]*)(?:Years|Days)\/(?:M|F)$

how to make a regex to accept ONLY alphabet and space [closed]

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i am using this regex but it still doesn't accept a 'whitespace' input. though it restricts any 'special character'..
.replace(/[0-9]|\W|^\s/,'')
Any help is much appreciated, thanks
You're looking for /[a-zA-Z\s]/. The \s covers spaces (tabs, newlines, etc.). If you literally just want a space " " then change it to /[a-zA-Z ]/.

validation for alphabets forward slash and dot [closed]

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am trying to validate relation field which will have alphabets, forward slash and dot for e.g
(s/o. Mr.ram or w/o. Mr.ram), i have already tried this ([a-z])/([a-z]) but it is not working
please help am new to this
thanks in advance
Just tested this in the JS console, you need to escape the slash in regular expressions.
/([a-z])\/([a-z])/
Should do it for you.

how to summarize this string in javascript? [closed]

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i want summarize this line in javascript!
how is it possible?
var c='['+']'+'('+')'+';'+':'+'<'+'>'+
'='+'<='+'/='+'>='+'+'-'+'&'+'*'+'/'+'=>';
I searched for character escapes but i found nothing!
I think this is what you want:
var opr_re = /\[|\]|\(|\)|;|:|<|>|=|<=|\/=|>=|\+|-|&|\*|\/|=>/;
\ is the escape character in regular expressions.

Regular expression needed [closed]

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I want the regular expression to extract the &[1], &[2},&[3],&[4] values from the following string, with comma delimited.
var str = "Sum({[Account].&[1]+[Account].&[2]+[Account].&[3]+[Account].&[4]})";
Thanks for your help
(&\[\d+\]) Seperates them in to groups, you have to delimit them with commas yourself but that's not a big problem.. :P
Btw.: This is a great test for regex testing purposes http://rubular.com/r/0kLKf1gTaD

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