Regular Expressions 101

^start of line

Group 1((?!src\/app\.js).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!src\/app\.js)

srcthe literal text src (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

appthe literal text app (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

jsthe literal text js (case sensitive)

.any character (except for line terminators)

$end of line

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

^((?!src\/app\.js).)*$

New

src/app.js
src/anotherone.js
libs/modules.js