Regular Expressions 101

1st Alternative\/\*(\*(?!\/)|[^*])*\*\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Group 1(\*(?!\/)|[^*])*

*repeats the group contents below any number of times:

1st Alternative\*(?!\/)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negative Lookahead(?!\/)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative[^*]

Negated Character Class[^*]

*the literal * (42₁₀ / 52₈ / 2A₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative\/\/.*

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

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

\/\*(\*(?!\/)|[^*])*\*\/|\/\/.*

New

/*
 Block comment at the top
 */
{
    "foo": {
        "abc": [ // inline comment
            123,
            456 // another inline comment
        ]
    },
    /* 
     Block comment in the middle 
     */
    "bar": 999 // one more inline comment
}

Regular Expression

Substitution