• console.clear();
• let a;
• console.log(a);
• a = 15;
• console.log("Ma variable a = " + a);
• let b = 9;
• console.log("Ma variable a = " + b);
• console.log(`${a + b}`);
• console.log(`${a - b}`);
• console.log(`${a * b}`);
• console.log(`${a / b}`);
• a = "bonjour";
• b = "les amis";
• console.log(`${a + " " + b}`);
• a = true;
• b = false;
• console.log(`${a} AND ${b} = ${a && b}`);
• a = new Date();
• b = new Date();
• b.setDate(a.getDate() - 61);
• console.log(a.toLocaleDateString() + " " + a.toLocaleTimeString());
• console.log(b.toLocaleDateString() + " " + b.toLocaleTimeString());
• a = Math.PI;
• b = "Bonjour";
• let c = true;
• let d = new Date();
• let e;
• let f = 12345678987654321n;
• console.log(typeof a);
• console.log(typeof b);
• console.log(typeof c);
• console.log(typeof d);
• console.log(typeof e);
• console.log(typeof f);