RegExp.prototype.global
The global
accessor property of RegExp
instances returns whether or not the g
flag is used with this regular expression.
Try it
Description
RegExp.prototype.global
has the value true
if the g
flag was used; otherwise, false
. The g
flag indicates that the regular expression should be tested against all possible matches in a string. Each call to exec()
will update its lastIndex
property, so that the next call to exec()
will start at the next character.
Some methods, such as String.prototype.matchAll()
and String.prototype.replaceAll()
, will validate that, if the parameter is a regex, it is global. The regex's @@match
and @@replace
methods (called by String.prototype.match()
and String.prototype.replace()
) would also have different behaviors when the regex is global.
The set accessor of global
is undefined
. You cannot change this property directly.
Examples
Using global
js
const regex = /foo/g;
console.log(regex.global); // true
const str = "fooexamplefoo";
const str1 = str.replace(regex, "");
console.log(str1); // example
const regex1 = /foo/;
const str2 = str.replace(regex1, "");
console.log(str2); // examplefoo
Specifications
Specification |
---|
ECMAScript Language Specification # sec-get-regexp.prototype.global |
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