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<!DOCTYPE html> <html> <body> <p>Click the button to do a global, case-insensitive search for the character-span [a-s].</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var str = "I Scream For Ice Cream, is that OK?!"; var patt1 = /[a-s]/gi; var result = str.match(patt1); document.getElementById("demo").innerHTML = result; } </script> </body> </html>