Regular Expressions 101

Group 1(<div[^>]*>(?:\g<1>|.)*?<\/div>)

<divthe literal text <div (case insensitive)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Non-Capturing Group(?:\g<1>|.)*?

*?repeats the group contents below any number of times:

1st Alternative\g<1>

\g<1>calls group 1 as a subroutine

2nd Alternative.

.any character

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

div>the literal text div> (case insensitive)

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(<div[^>]*>(?:\g<1>|.)*?<\/div>)

New

<body>
    <article>
        <img src="image.png">
        <div class="menu">
            <div>
                <div>
                    <div></div>
                </div>
            </div>
        </div>
        <p></p>
        <div>
            <div></div>
        </div>
        <!--- some elements -->
    </article>
    <footer>
        <!--- some elements -->
    </footer>
</body>

Regular Expression

Extraction