JS对象Object用法总结

1、获取对象的key及value值—Object.entries

1.1 常规对象

const obj = {
    id:1,
    name:'张三',
    age:20
}
for(const [key, value] of Object.entries(obj)){
    console.log('key=',key, '-----value=', value)
}

输出结果：

key= id -----value= 1
main.ts:28 key= name -----value= 张三
main.ts:28 key= age -----value= 20

1.2 对象嵌套对象

const obj = {
    '学号20230001': {name:'张三', age: 20},
    '学号20230002': {name:'李四', age: 20},
    '学号20230003': {name:'王五', age: 20},
}
for(const [key, value] of Object.entries(obj)){
    console.log('key=',key, '-----value=', value)
}

输出结果：

key= 学号20230001 -----value= {name: '张三', age: 20}
main.t