blocks|key|214945|text|假设您希望保留customerData键，对于用例来说，将所有内容设置为null就足够了，这将简化重置：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|214946|this.setState(customerData:+Object.assign(...Object.keys(this.state.customerData).map(k+=>+({[k]:+null}))))|214947|https://jsfiddle.net/0ymx7fsq/|214948|或者，由于您使用的是类组件，您还可以将初始状态保存在构造函数中：|214949|constructor(props)+{
++++super(props)
++++this.state+=+initialState;
}
...
reset()+{
++++this.setState({+customerData+:+initialState.customerData+});
}
...|code-block|syntax|javascript|214950|entityMap|0|LINK|mutability|MUTABLE|url^0|7|C|0|0|2Z|0|0|U|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|13|8|@]|D|@$9|14|A|15|1|16]]|E|$]]|$1|J|3|K|5|6|7|17|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|18|8|@]|D|@]|E|$O|P]]|$1|Q|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|I]]]]

Assuming you want to preserve the <code>customerData</code> keys, for your use case it may be sufficient to set everything to null which would simplify the reset:

<code>this.setState(customerData: Object.assign(...Object.keys(this.state.customerData).map(k =&gt; ({[k]: null}))))</code>

<a href="https://jsfiddle.net/0ymx7fsq/" rel="nofollow noreferrer">https://jsfiddle.net/0ymx7fsq/</a>

Alternatively, since you're using class components you can also save the initial state in a constructor as well:

<pre><code>constructor(props) {
 super(props)
 this.state = initialState;
}
...
reset() {
 this.setState({ customerData : initialState.customerData });
}
...
</code></pre>

blocks|key|214896|text|这里有两个简单的选择：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|214897|创建默认对象|214898|在组件之上，您可以为您的状态创建“空”值。例如：|214899|const+emptyCustomerData+=+{
++id:+'',
++name:+'',
++type:+'',
++place:+'',
++country:+'',
++timezone:+'',
++status:+false,
}|code-block|syntax|javascript|214900|当您想清除状态对象时，现在只需调用：|214901|this.setState({
++customerData:+emptyCustomerData,
})|214902|214903|允许customerData的所有值都为空|offset|length|style|CODE|214904|您可以简单地将customerData设置为空对象：|214905|this.setState({
++customerData:+{},
})|214906|这样做意味着在使用代码中的任何属性之前，需要检查undefined。|214907|//+This+sets+myVal+to+customerData.name,+or+if+name+is+undefined,+to+an+empty+string
const+myVal+=+this.state.customerData.name+%7C%7C+''|214908|entityMap^0|0|0|0|0|0|0|0|2|C|0|7|C|0|0|O|9|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|17|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|18|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|19|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|1A|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1C|8|@$R|1D|S|1E|T|U]]|9|@]|A|$]]|$1|V|3|W|5|6|7|1F|8|@$R|1G|S|1H|T|U]]|9|@]|A|$]]|$1|X|3|Y|5|H|7|1I|8|@]|9|@]|A|$I|J]]|$1|Z|3|10|5|6|7|1J|8|@$R|1K|S|1L|T|U]]|9|@]|A|$]]|$1|11|3|12|5|H|7|1M|8|@]|9|@]|A|$I|J]]|$1|13|3|-4|5|6|7|1N|8|@]|9|@]|A|$]]]|14|$]]

There are two easy options here:

<h1>Create a default object</h1>

Above your component you can create the 'empty' value for your state. For example:

<pre><code>const emptyCustomerData = {
 id: '',
 name: '',
 type: '',
 place: '',
 country: '',
 timezone: '',
 status: false,
}
</code></pre>

When you want to clear your state object, now you just call:

<pre><code>this.setState({
 customerData: emptyCustomerData,
})
</code></pre>

<hr>

<h1>Allow all the values of <code>customerData</code> to be nullable</h1>

You could simply set <code>customerData</code> to an empty object:

<pre><code>this.setState({
 customerData: {},
})
</code></pre>

Doing this means that before using any of the properties in your code, you need to check for <code>undefined</code>:

<pre><code>// This sets myVal to customerData.name, or if name is undefined, to an empty string
const myVal = this.state.customerData.name || ''
</code></pre>

blocks|key|214910|text|您可以设置像initialState这样的变量。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|214911|const+initialState+=+{
++customerData:+{
++++++id:+'',
++++++name:+'',
++++++type:+'',
++++++place:+'',
++++++country:+'',
++++++timezone:+'GMT%2B5:30',
++++++status:+false
++}
}|code-block|syntax|javascript|214912|在隐藏模式之前，请执行以下操作：|214913|this.setState(initialState)|214914|entityMap^0|6|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

You can set a variable like initialState:

<pre><code>const initialState = {
 customerData: {
 id: '',
 name: '',
 type: '',
 place: '',
 country: '',
 timezone: 'GMT+5:30',
 status: false
 }
}
</code></pre>

And before you hide the modal, do a:

<pre><code>this.setState(initialState)
</code></pre>

blocks|key|1882650|text|您可以使用减缩以避免依赖于params计数和数字。应该是这样的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1882651|const+data+=+{
++id:+'1',
++name:+'2',
++type:+'3',
++place:+'4',
++country:+'5',
++timezone:+'6',
++status:+true
}

function+getDefaultObject(obj)+{
++const+defaultValues+=+{
++++'string':+'',
++++'boolean':+false
++}

++return+Object.keys(obj).reduce((acc,+rec,+index)+=>+{
++++return+{+...acc,+[rec]:+defaultValues[typeof+obj[rec]]}
++},+{})
}

console.log(getDefaultObject(data))|code-block|syntax|javascript|1882652|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use reduce in order not to rely on params count and number. It should looks like this

<pre><code>const data = {
 id: '1',
 name: '2',
 type: '3',
 place: '4',
 country: '5',
 timezone: '6',
 status: true
}

function getDefaultObject(obj) {
 const defaultValues = {
 'string': '',
 'boolean': false
 }

 return Object.keys(obj).reduce((acc, rec, index) =&gt; {
 return { ...acc, [rec]: defaultValues[typeof obj[rec]]}
 }, {})
}

console.log(getDefaultObject(data))
</code></pre>

blocks|key|1882716|text|今天面对你的问题，我用下面的代码解决了它|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1882717|const+handleResetState+=+()+=>+{
++++const+{customerData}+=+this.state
++++let+emptyState+=+{};
++++for+(const+key+in+customerData){
++++++++emptyState+=+{...emptyState,+[key]+:+""}
++++}
++++//i+think+you+will+more+need+the+second+option,+so+dont+use+first+option
++++//normal+change+(first+option)
++++this.setState({customerData:+emptyState});
++++//in+case+if+your+key+need+to+have+special+initial+value+that+are+not+empty+string+(second+option)
++++this.setState({customerData:+{...emptyState,+status:+false}+})
}|code-block|syntax|javascript|1882718|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Just facing your problem today and i solved it with this code
<pre><code>const handleResetState = () =&gt; {
 const {customerData} = this.state
 let emptyState = {};
 for (const key in customerData){
 emptyState = {...emptyState, [key] : &quot;&quot;}
 }
 //i think you will more need the second option, so dont use first option
 //normal change (first option)
 this.setState({customerData: emptyState});
 //in case if your key need to have special initial value that are not empty string (second option)
 this.setState({customerData: {...emptyState, status: false} })
}
</code></pre>

I am using React. This is my state

<pre><code>state = {
customerData: {
 id: '',
 name: '',
 type: '',
 place: '',
 country: '',
 timezone: 'GMT+5:30',
 status: false
 }
}
</code></pre>

There is an edit functionality where the customerData object gets populated on click of edit button. I am showing this data in a modal. 

Now in the modal, when I click the submit button, the modal should hide and the data populated in the customerData object should be empty. I can do it like this:

<pre><code>this.setState({
customerData: {
 ...this.state.customerData
 id: '',
 name: '',
 type: '',
 place: '',
 country: '',
 timezone: '',
 status: false
 }
}
})
</code></pre>

I am wondering is there any one line way in ES6 to make the customerData Object empty. Because, if there are too many fields, it will be difficult.

Better way to empty all the values of an object by setState in react

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我用的是反应。这是我的状态state = {customerData: {      id: '',      name: '',      type: '',      place: '',      country: '',      timezone: 'GMT+5:30',      status: false...

问使用react中的setState清空对象的所有值的更好方法
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用react中的setState清空对象的所有值的更好方法EN