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<!DOCTYPE html> <html> <body> <h1>JavaScript Regular Expression</h1> <h2>The ?! Quantifier</h2> <p>A global, case insensitive search for "is" not followed by " all":</p> <p id="demo"></p> <script> let text = "Is this all there is"; let pattern = /is(?! all)/gi; let result = text.match(pattern); document.getElementById("demo").innerHTML = result; </script> </body> <!-- /jsref/tryit.asp?filename=tryjsref_regexp_notahead Thu, 06 Feb 2025 18:35:48 GMT --> </html>
