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<!DOCTYPE html> <html> <body> <h1>JavaScript Regular Expression</h1> <h2>Using [ ] to find a range of characters</h2> <p>A global search for the numbers 1 to 4:</p> <p id="demo"></p> <script> let text = "123456789"; let pattern = /[1-4]/g; let result = text.match(pattern); document.getElementById("demo").innerHTML = result; </script> </body> </html>
