บทที่ 3: บทที่ 3: การทำงานกับ String

let name = "Alice";
let msg = "Hello " + name;
console.log(msg);

let name = "Alice";
let msg = `Hello ${name}`;
console.log(msg);

let text = "JavaScript is fun";
console.log(text.length); // 18
console.log(text.toUpperCase()); // "JAVASCRIPT IS FUN"
console.log(text.toLowerCase()); // "javascript is fun"
console.log(text.includes("fun")); // true
console.log(text.replace("fun", "awesome")); // "JavaScript is awesome"