JS setter getter

学习 
1
2
3
4
5
6
7
8
9
10
11
12
13
let obj = {
    _name: null,
    get name() {
        return this._name
    },
    set name(name) {
        if (typeof name !== 'string') {
            return console.log('赋值类型必须为 String')
        } else {
            this._name = name
        }
    }
}