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RegExp ?! Quantifier

Do a global, case insensitive search for is" not followed by " all"

Browser Support

/(?!n)/ is an ECMAScript1 (ES1) feature.

ES1 (JavaScript 1997) is fully supported in all browsers:

Chrome IE Edge Firefox Safari Opera
Yes Yes Yes Yes Yes Yes

Syntax

new RegExp("regexp(?!n)")

or

/regexp(?!n)/

Syntax with modifiers

new RegExp("regexp(?!n)", "g")

or simply:

/regexp(?!n)/g

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