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<!DOCTYPE html> <html> <body> <p id="demo1"></p> <p id="demo2"></p> <p id="demo3"></p> <script> var name = "WEB CƠ BẢN"; var a = name.charCodeAt(0); var b = name.charCodeAt(5); var c = name.charCodeAt(name.length-1); document.getElementById("demo1").innerHTML = a; document.getElementById("demo2").innerHTML = b; document.getElementById("demo3").innerHTML = c; </script> </body> </html>
<!DOCTYPE html> <html> <body> <p id="demo1"></p> <p id="demo2"></p> <p id="demo3"></p> <script> var name = "WEB CƠ BẢN"; var a = name.charCodeAt(0); var b = name.charCodeAt(5); var c = name.charCodeAt(name.length-1); document.getElementById("demo1").innerHTML = a; document.getElementById("demo2").innerHTML = b; document.getElementById("demo3").innerHTML = c; </script> </body> </html>