JavaScript RegExp ?! Quantifier
Example
Do a global, case insensitive search for "is" not followed by " all":
var str = "Is this all there is";
var patt1 = /is(?! all)/gi;
The marked text below shows where the expression gets a match:
Is this all there is
Try it yourself »
Definition and Usage
The ?!n quantifier matches any string that is not followed by a specific string n.
Tip: Use the ?=n quantifier to match any string that IS followed by a specific string n.
Browser Support
The ?! quantifier is supported in all major browsers.
Syntax
new RegExp("regexp(?!n)")
or
/regexp(?!n)/
Syntax with modifiers
new RegExp("regexp(?!n)","g")
or simply:
/\regexp(?!n)/g
JavaScript RegExp Object
