let math = {
subject: '数学',
children: [{ id: 1, title: '数一'},
{id: 2, title: '数二'},
{id: 3, title: '数三'},
{id: 0, title: '待定'}
]
}
// 增加新属性
math.remark = "备注";
// 删除对象中某一属性
delete math.subject
后果:
let math = {
subject: '数学',
children: [{ id: 1, title: '数一'},
{id: 2, title: '数二'},
{id: 3, title: '数三'},
{id: 0, title: '待定'}
]
}
// 增加新属性
math.remark = "备注";
// 删除对象中某一属性
delete math.subject
后果: