Regular Expressions 101

Pro

Group 1(=>)

=>the literal text =>

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

Negative Lookahead(?![^\{]*\})

Negated Character Class[^\{]*

*matches any number of characters outside the set below:

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

(=>)\s*(?![^\{]*\})

New

name => '=>'
(name) => {...}
name => ({..})
function() { return '=>'; }
function(name) { return () => {}}
(name, age) => doSomething('ff')
name => doSomething(() => {})

Substitution

name => '=>'
(name) => {...}
name => ({..})
function() { return '=>'; }
function(name) { return () => {}}
(name, age) => doSomething('ff')
name => doSomething(() => {})