【对象转为字符串】

javascript">const obj = {
     id: 0,
     name: '张三',
     age: 12
}
const objToStr = JSON.stringify(obj)
console.log('obj:', obj)
console.log('objToStr:', objToStr)

【 json字符串转为对象】

javascript">const str = '{"id":0,"name":"张三","age":12}'
const strToObj = JSON.parse(str)
console.log('str:', str)
console.log('strToObj:', strToObj)