Regular Expressions 101

\ban ASCII word boundary

newthe literal text new (case sensitive)

\s+any whitespace character, repeated at least once

Alertthe literal text Alert (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:(?!\.showAndWait;\s*$)[\s\S])*

*repeats the group contents below any number of times:

Negative Lookahead(?!\.showAndWait;\s*$)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

showAndWaitthe literal text showAndWait (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

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

$end of line

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

"the literal " (34₁₀ / 42₈ / 22₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

;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

\bnew\s+Alert\((?:(?!\.showAndWait\(\);\s*$)[\s\S])*"\);

New

new Alert(AlertType.INFORMATION, "This alert should not be matched").showAndWait();

new Alert(AlertType.INFORMATION, "This alert should be matched");

Regular Expression

Extraction