常用mobx响应新值变化函数autorun和observe

autorun响应式函数，常用与打印日志、持久化或者更新UI的代码

var numbers = observable([1,2,3]);var disposer = autorun(() => console.log(sum.get()));
// 输出 '6'
numbers.push(4);
// 输出 '10'

disposer();
numbers.push(5);
// 不会再输出任何值。

observe可监听新旧值newValue、oldValue

import {observable, observe} from 'mobx';

const person = observable({
    firstName: "Maarten",
    lastName: "Luther"
});

const disposer = observe(person, (change) => {
    console.log(change.type, change.name, "from", change.oldValue, "to", change.object[change.name]);
});

person.firstName =  "Martin";
// 输出: 'update firstName from Maarten to Martin'

disposer();
// 忽略任何未来的变化

// 观察单个字段
const disposer2 = observe(person, "lastName", (change) => {
    console.log("LastName changed to ", change.newValue);
});

本文地址：

https://www.cnblogs.com/stumpx/p/13415830.html