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<!DOCTYPE html> <html> <body> <h1>JavaScript Regular Expression</h1> <h2>The ?= Quantifier</h2> <p>Search for "is" followed by " all":</p> <p id="demo"></p> <script> let text = "Is this all there is"; let pattern = /is(?= all)/; let result = text.match(pattern); document.getElementById("demo").innerHTML = result; </script> </body> </html>
