Regular Expressions 101

^start of string

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

functionthe literal text function (case sensitive)

\s+any whitespace character, repeated at least once

Group 1([a-zA-Z$_][a-zA-Z\d$_]*)

Character Class[a-zA-Z$_]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[a-zA-Z\d$_]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\da digit

$the literal $ (36₁₀ / 44₈ / 24₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

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

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^\s*function\s+([a-zA-Z$_][a-zA-Z\d$_]*)\s*\(


 function
 
 $$ 
(z) {
    if (z == true) {
      console.log ("Something says Z is true");
    }
  }