1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
<!DOCTYPE html> <html> <body> <script> "use strict"; var test1 = "First"; let test2 = "Second"; if (true) { var test4 = "Four"; let test5 = "Five"; alert (test2); } alert (test1); alert(test2); alert (test4); alert (test5); </script> </body> </html>