javascript uppercase

1var str = "Hello World!";
2var res = str.toUpperCase();  //HELLO WORLD!

1var string = "To Upper Case";
2console.log(string.toUpperCase()); // TO UPPER CASE

1"foo bar!".toUpperCase();

1let dna = " TCG-TAC-gaC-TAC-CGT-CAG-ACT-TAa-CcA-GTC-cAt-AGA-GCT    ";
2dna = dna.trim().toUpperCase();
3console.log(dna);
4

1var string = "A string";
2console.log(string.toUpperCase()); // -> A STRING

1const String = "Node Express";
2const Upper = String.toUpperCase();