Javascript marge和slice json

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];
const mergedArray = arr1.concat(arr2);
console.log(mergedArray); // [1, 2, 3, 4, 5, 6]

const arr = [1, 2, 3, 4, 5];
const slicedArray = arr.slice(1, 4);
console.log(slicedArray); // [2, 3, 4]

const person = {
  name: "John",
  age: 30,
  city: "New York"
};

// 将JavaScript对象转换为JSON字符串
const jsonStr = JSON.stringify(person);
console.log(jsonStr); // {"name":"John","age":30,"city":"New York"}

// 将JSON字符串转换为JavaScript对象
const jsonObj = JSON.parse(jsonStr);
console.log(jsonObj.name); // John