"by running V8 version 4.9 or later with --harmony, or by enabling experimental JavaScript features (use about:flags) in Chrome from version 49 onwards."
Show navigation Introduced with the third edition of the ECMA-262 specification, regular expressions have been part of Javascript since 1999. In functionality and expressiveness, JavaScript’s imple...
"by running V8 version 4.9 or later with --harmony, or by enabling experimental JavaScript features (use about:flags) in Chrome from version 49 onwards."
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RegExp lookbehind assertions · V8
Show navigation Introduced with the third edition of the ECMA-262 specification, regular expressions have been part of Javascript since 1999. In functionality and expressiveness, JavaScript’s imple...
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