Regular Expressions 101

1st Alternative(url\s*$[^()]+$)

Group 1(url\s*$[^()]+$)

urlthe literal text url (case sensitive)

\s*any whitespace character, repeated any number of times

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^()]+

+matches at least one character outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative(@import[^;]+;)

Group 2(@import[^;]+;)

@importthe literal text @import (case sensitive)

Negated Character Class[^;]+

+matches at least one character outside the set below:

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(url\s*\([^()]+\))|(@import[^;]+;)

Test String
New

@import "//static001.geekbang.org/static/infoq/www/css/app.0d41a85d7b732aac5d44bdf04a8b642c.css";

@font-face {    
    font-family: layui-icon;
    src: url(http://foo.com/font/iconfont.eot?v=230-rc1);
    src: url(http://foo.com/font/iconfont.eot?v=230-rc1#iefix) format('embedded-opentype'),url(//foo.com/font/iconfont.svg?v=230-rc1#iconfont)
}

Regular Expression

Test StringNew

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Test String
New

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