December 2017
Intermediate to advanced
329 pages
6h 9m
Chinese
Content preview from React学习手册
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Props
、
State
和组件树
｜
131
在大部分
React
应用中，在根组件中对所有
Stae
数据进行分组是完全可能的。
State
数据
可以通过属性在组件树上传递，并且数据可以通过双向数据绑定回传到树根。最终的
结果是整个应用程序用到的
State
数据都存放于一处。这通常可以确保“真实单一数据
源”。
注
4
接下来，我们将介绍如何构建表现层，将所有
State
存储在一个地方，即根节点组件。
颜色管理器程序概述
颜色管理器允许用户在他们的自定义列表中对颜色进行添加、命名、评分和移除操
作。颜色管理器实际的
State
可以用单个数组表示：
{
colors: [
{
"id": "0175d1f0-a8c6-41bf-8d02-df5734d829a4",
"title": "ocean at dusk",
"color": "#00c4e2",
"rating": 5
},
{
"id": "83c7ba2f-7392-4d7d-9e23-35adbe186046",
"title": "lawn",
"color": "#26ac56",
"rating": 3
},
{
"id": "a11e3995-b0bd-4d58-8c48-5e49ae7f7f23",
"title": "bright red",
"color": "#ff0000",
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.