Thinking regular expression is your way to get started to use regular expressions

Mönster sökning vad är regex.

Validering

NOTIS: 12345 , the bugg x

2008-02-21 2008 /03 / 22 20080423 2008 05 24

21-02-2008 22-03-2008 23-04-2008 24-05-2008

(?:(?:
)?[ ])*(?:(?:(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ] )+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:( ?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*))*@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00- 31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)* ](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+ (?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?: (?:
)?[ ])*))*|(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+| |(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
) ?[ ])*)*<(?:(?:
)?[ ])*(?:@(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?: r
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
) ?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ] )*))*(?:,@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])* )(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ] )+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*) *:(?:(?:
)?[ ])*)?(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+ ||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*))*@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31 ]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*]( ?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(? :(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(? :
)?[ ])*))*>(?:(?:
)?[ ])*)|(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(? :(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)? [ ]))*&quot;(?:(?:
)?[ ])*)*:(?:(?:
)?[ ])*(§?:(?:(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]| \.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<> @,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot; (?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*))*@(?:(?:
)?[ ] )*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\ &quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(? :[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[ ]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*|(?:[^()<>@,;:\&quot;.[] 00- 31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|( ?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)*<(?:(?:
)?[ ])*(?:@(?:[^()<>@,; :\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([ ^[]
\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot; .[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[ ]
\]|\.)*](?:(?:
)?[ ])*))*(?:,@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;. [] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[] r\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\] |\.)*](?:(?:
)?[ ])*))*)*:(?:(?:
)?[ ])*)?(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\ .|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@, ;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|&quot;(? :[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*))*@(?:(?:
)?[ ])* (?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;. []]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[ ^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[] ]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*>(?:(?:
)?[ ])*)(?:,s*( ?:(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\ &quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)(?:.(?:( ?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[ [&quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*))*@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(? :.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+| |(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*|(?: [^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;.[ ]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)*<(?:(?:
) ?[ ])*(?:@(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot; ()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
) ?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<> @,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*(?:,@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@, ;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ] )*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\ &quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*)*:(?:(?:
)?[ ])*)? (?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[&quot;()<>@,;:\&quot;. []]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ])*)(?:.(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+||(?=[[ &quot;()<>@,;:\&quot;.[]]))|&quot;(?:[^&quot;
\]|\.|(?:(?:
)?[ ]))*&quot;(?:(?:
)?[ ]) *))*@(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ]) +||(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*)(?: .(?:(?:
)?[ ])*(?:[^()<>@,;:\&quot;.[] 00-31]+(?:(?:(?:
)?[ ])+| |(?=[[&quot;()<>@,;:\&quot;.[]]))|[([^[]
\]|\.)*](?:(?:
)?[ ])*))*>(?:( ?:
)?[ ])*))*)?;s*)

^

$

^grey

^ grey

^ g rey

^g r ey

^gr e y

^gre y

^grey$

^grey beginning of line ^ followed immediately by g followed immediately by r followed immediately by e followed immediately by y

^grey

beginning of line ^

followed immediately by g

followed immediately by r

followed immediately by e

followed immediately by y

/ /Everybody get in front/ You know regular expressions

[ea] Character Classes

[1234] Character Classes

[1-4] Character Classes

[^1-4] Character Classes

. Any Character

+ Repetition

* Repetition

d Shortcut [0-9]

D Shortcut [^0-9]

() Backreference

.+[?] Questions