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<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></html>