Regular Expressions 101

Group 1(<.*?style=.*?)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

.*?any character (except for line terminators), repeated any number of times

style=the literal text style= (case sensitive)

.*?any character (except for line terminators), repeated any number of times

Group 2(\s*height.*?;)

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

heightthe literal text height (case sensitive)

.*?any character (except for line terminators), repeated any number of times

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Group 3(.*?>)

.*?any character (except for line terminators), repeated any number of times

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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.

25 tokens

Regular Expression

(<.*?style=.*?)(\s*height.*?;)(.*?>)

New

<img src="http://hello-world/img/a1.jpg" style="width: 800px; height: 600px; float:right;">

<img src="http://hello-world/img/a1.jpg" style="width: 800px; height: 60%; float:right;">
<div style="height:50px; width:10px;"></div>
<img src="http://hello-world/img/a1.jpg" style="width: 800px; height: 5em; float:right;">