Loc Nguyen

Common regex

2020/12/08 regex

Comman Regex

Password

^(?=.[A-Z].[A-Z])(?=.[!@#$&])(?=.[0-9].[0-9])(?=.[a-z].[a-z].*[a-z]).{8}$

Hex

#([a-fA-F] [0-9]){3, 6}

Email

/[A-Z0-9._%+-]+@[A-Z0-9-]+.+.[A-Z]{2,4}/igm

IPV4 Address

/\b(?:(?:25[0-5] 2[0-4][0-9] [01]?[0-9][0-9]?).){3}(?:25[0-5] 2[0-4][0-9] [01]?[0-9][0-9]?)\b/

IPV6 Address

(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4} ([0-9a-fA-F]{1,4}:){1,7}: ([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4} ([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2} ([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3} ([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4} ([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5} [0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6}) :((:[0-9a-fA-F]{1,4}){1,7} :) fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,} ::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5] (2[0-4] 1{0,1}[0-9]){0,1}[0-9]).){3,3}(25[0-5] (2[0-4] 1{0,1}[0-9]){0,1}[0-9]) ([0-9a-fA-F]{1,4}:){1,4}:((25[0-5] (2[0-4] 1{0,1}[0-9]){0,1}[0-9]).){3,3}(25[0-5] (2[0-4] 1{0,1}[0-9]){0,1}[0-9]))

x.xxx

/\d{1,3}(?=(\d{3})+(?!\d))/g

Add HTTPS

if (!s.match(/^[a-zA-Z]+:\/\//)) { s = ‘http://’ + s; }

Get hostname from URL

/https?:\/\/(?:[-\w]+.)?([-\w]+).\w+(?:.\w+)?\/?.*/i

Phone number

^+?\d{1,3}?[- .]?(?(?:\d{2,3}))?[- .]?\d\d\d[- .]?\d\d\d\d$

Space (start & end)

^[ \s]+ [ \s]+$

Get img resource

< [img][^>][src] = *["']{0,1}([^"'\ >])

DD/MM/YYYY

^(?:(?:31(\/ - .)(?:0?[13578] 1[02]))\1 (?:(?:29 30)(\/ - .)(?:0?[1,3-9] 1[0-2])\2))(?:(?:1[6-9] [2-9]\d)?\d{2})$ ^(?:29(\/ - .)0?2\3(?:(?:(?:1[6-9] [2-9]\d)?(?:0[48] [2468][048] [13579][26]) (?:(?:16 [2468][048] [3579][26])00))))$ ^(?:0?[1-9] 1\d 2[0-8])(\/ - .)(?:(?:0?[1-9]) (?:1[0-2]))\4(?:(?:1[6-9] [2-9]\d)?\d{2})$

Youtube

/https?:\/\/(?:youtu.be\/ (?:[a-z]{2,3}.)?youtube.com\/watch(?:\? #!)v=)([\w-]{11}).*/gi

ISBN

/\b(?:ISBN(?:: ? ))?((?:97[89])?\d{9}[\dx])\b/i

CSS

^\s[a-zA-Z-]+\s[:]{1}\s[a-zA-Z0-9\s.#]+[;]{1}

Remove HYML comment

Facebook URL page

/(?:http:\/\/)?(?:www.)?facebook.com\/(?:(?:\w)#!\/)?(?:pages\/)?(?:[\w-]\/)([\w-])/

Internet Explorer version

^.MSIE 5-8?(?!.Trident\/[5-9].0).*$

Refer https://www.hongkiat.com/blog/regex-web-developers/

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