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<!DOCTYPE html> <html> <body> <p id="demo"></p> <script> var str = "huong dan hoc lap trinh web VA THIET KE WEB 2016"; var patt = /[^B-H]/gi; var result = str.match(patt); document.getElementById("demo").innerHTML = result; </script> </body> </html>
<!DOCTYPE html> <html> <body> <p id="demo"></p> <script> var str = "huong dan hoc lap trinh web VA THIET KE WEB 2016"; var patt = /[^B-H]/gi; var result = str.match(patt); document.getElementById("demo").innerHTML = result; </script> </body> </html>