// 示例代码:JavaScript 字符串拼接
// 方法1:使用加号 (+) 拼接字符串
let str1 = "Hello";
let str2 = "World";
let result1 = str1 + " " + str2;
console.log(result1); // 输出: Hello World
// 方法2:使用模板字符串(反引号 ``)
let greeting = "Hi";
let name = "Alice";
let result2 = `${greeting}, ${name}!`;
console.log(result2); // 输出: Hi, Alice!
// 方法3:使用 Array.join() 方法
let parts = ["This", "is", "a", "sentence."];
let result3 = parts.join(" ");
console.log(result3); // 输出: This is a sentence.
// 方法4:使用 String.concat() 方法
let word1 = "Good";
let word2 = "Morning";
let result4 = word1.concat(" ", word2);
console.log(result4); // 输出: Good Morning
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