React[007]:生命周期
Coding
2020-01-31 23:36:00
太偷懒了哈
import React, { PureComponent } from 'react'
const noop = () => { }
export default class TodoItem extends PureComponent {
PureComponent 代替 Component 或者 用以下代码进行渲染优化
shouldComponentUpdate(nextProps, _nextState) {
return nextProps.isCompleted !== this.props.isCompleted;
}