replace()方法来替换字符串中的特定内容。，``javascript，let str = "Hello, world!";，let newStr = str.replace("world", "everyone");，console.log(newStr); // 输出: Hello, everyone!，``replace()方法来替换字符串中的特定内容。，``javascript，let str = "Hello, world!";，let newStr = str.replace("world", "everyone");，console.log(newStr); // 输出: Hello, everyone!，``Powered By Z-BlogPHP 1.7.3