blocks|key|4252640|text|尝试使用input标记而不是choice。将[(ngmodel)]设置为容器的属性，例如category1，并对每个输入使用相同的名称。它不需要与属性名匹配，我随意将其设置为category1。将category1属性设置为默认值。组件的category1属性值将初始化其中一个要设置的单选按钮。在单击方法参数中使用category1属性。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4252641|有关工作示例，请参阅https://stackblitz.com/edit/angular-yq5w2y?file=app/app.component.ts。|4252642|​|4252643|<div+class="app-form+container-fluid">
++++<div+class="row">
++++++++<div+class="col-6">
++++++++++++<div+class="button-left+float-left">
++++++++++++++++<button+(click)="onPrevious('tab-empinfo')">Previous</button>
++++++++++++</div>
++++++++</div>
++++++++<div+class="col-6">
++++++++++++<div+class="button-right+float-right">
++++++++++++++++<button+
++++++++++++++++(click)="onNext('tab-selection',+{
+++++++++++++++++++++++++form:+'category',+
+++++++++++++++++++++++++data:+{category:+category1}})">
++++++++++++++++Next
++++++++++++++++</button>
++++++++++++</div>
++++++++</div>
++++</div>
++++<div+class="row">
++++++++<div+class="col-12">
++++++++++++<h4>Category</h4>
++++++++</div>
++++</div>
++++<div+class="row">
++++++++<div+class="col-12">
++++++++++++++++<div+class="form-group"+*ngFor="let+input+of+categorySelection">
++++++++++++++++++<input++type="radio"+*ngIf="input.type+==+'radio'"+[(ngModel)]="category1"+name="category1"+value="{{input.answer}}"+>+{{input.answer}}
++++++++++++++++</div>
++++++++</div>
++++</div>
</div>
----
import+{+Component+}+from+'@angular/core';

@Component({
++selector:+'my-app',
++templateUrl:+'./app.component.html',
++styleUrls:+[+'./app.component.css'+]
})
export+class+AppComponent++{
++name+=+'Angular+5';
++categorySelection+=+[{type:+'radio',+answer:+"who"},+{type:+'radio',+answer:+"what"}];
++category1+=+"who";
++result;
++onPrevious(data:+string)+{
++++this.result+=+data;
++}
++onNext(x,+data:+any):+any+{
++++this.result+=+data;
++}
}|code-block|syntax|javascript|4252644|4252645|entityMap|0|LINK|mutability|MUTABLE|url|https://stackblitz.com/edit/angular-yq5w2y?file=app/app.component.ts^0|4|5|E|6|M|B|18|9|2F|9|2Q|9|4E|9|0|A|1W|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1C|8|@]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|H|3|I|5|6|7|1G|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|1H|8|@]|D|@]|E|$M|N]]|$1|O|3|I|5|6|7|1I|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]]]

<p>Try using an <code>input</code> tag instead of <code>choice</code>. Set the <code>[(ngmodel)]</code> to a property of your container, e.g. <code>category1</code> and use the same name for each input. It does not need to match the property name, I arbitrarily set it to be <code>category1</code>. Set <code>category1</code> property to the default value. The component's category1 property value will initialize one of the radio button to be set. Use the <code>category1</code> property in your on click method parameter.</p>

<p>See <a href="https://stackblitz.com/edit/angular-yq5w2y?file=app/app.component.ts" rel="nofollow noreferrer">https://stackblitz.com/edit/angular-yq5w2y?file=app/app.component.ts</a> for a working example.</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="app-form container-fluid"&gt;
    &lt;div class="row"&gt;
        &lt;div class="col-6"&gt;
            &lt;div class="button-left float-left"&gt;
                &lt;button (click)="onPrevious('tab-empinfo')"&gt;Previous&lt;/button&gt;
            &lt;/div&gt;
        &lt;/div&gt;
        &lt;div class="col-6"&gt;
            &lt;div class="button-right float-right"&gt;
                &lt;button 
                (click)="onNext('tab-selection', {
                         form: 'category', 
                         data: {category: category1}})"&gt;
                Next
                &lt;/button&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="row"&gt;
        &lt;div class="col-12"&gt;
            &lt;h4&gt;Category&lt;/h4&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="row"&gt;
        &lt;div class="col-12"&gt;
                &lt;div class="form-group" *ngFor="let input of categorySelection"&gt;
                  &lt;input  type="radio" *ngIf="input.type == 'radio'" [(ngModel)]="category1" name="category1" value="{{input.answer}}" &gt; {{input.answer}}
                &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;
&lt;/div&gt;
----
import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: [ './app.component.css' ]
})
export class AppComponent  {
  name = 'Angular 5';
  categorySelection = [{type: 'radio', answer: "who"}, {type: 'radio', answer: "what"}];
  category1 = "who";
  result;
  onPrevious(data: string) {
    this.result = data;
  }
  onNext(x, data: any): any {
    this.result = data;
  }
}</code></pre>
</div>
</div>
</p>


<p>How can I pass to <code>onNext()</code> the form's input value of the control named "Category1"? When the form is changed the value is passed but when the user doesn't change the value isn't. I need the value always passed. How do I do this?</p>

<pre><code>&lt;div class="app-form container-fluid"&gt;
    &lt;div class="row"&gt;
        &lt;div class="col-6"&gt;
            &lt;div class="button-left float-left"&gt;
                &lt;button (click)="onPrevious('tab-empinfo')"&gt;Previous&lt;/button&gt;
            &lt;/div&gt;
        &lt;/div&gt;
        &lt;div class="col-6"&gt;
            &lt;div class="button-right float-right"&gt;
                &lt;button 
                (click)="onNext('tab-selection', {
                         form: 'category', 
                         data: {category: formCategory.value['Category1']}})"&gt;
                Next
                &lt;/button&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="row"&gt;
        &lt;div class="col-12"&gt;
            &lt;h4&gt;Category&lt;/h4&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="row"&gt;
        &lt;div class="col-12"&gt;
            &lt;form #formCategory="ngForm"&gt;
                &lt;div class="form-group" *ngFor="let input of categorySelection; let i = index"&gt;
                    &lt;choice *ngIf="input.type == 'choice'" name="Category{{ i + 1 }}" ngModel
                            [multiple]="input.multiple" [question]="input.question" [answers]="input.answers"&gt;&lt;/choice&gt;
                &lt;/div&gt;
            &lt;/form&gt;
        &lt;/div&gt;
    &lt;/div&gt;
&lt;/div&gt;
&lt;pre&gt;
    {{ formCategory.value | json }}
&lt;/pre&gt;
</code></pre>

<p>Please see screen shot:</p>

<p><a href="https://i.stack.imgur.com/V9Tmq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/V9Tmq.png" alt="enter image description here"></a></p>


Angular 5: Obtaining form input value whether changed or not

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

如何将名为"Category1“的控件的表单输入值传递给onNext()？当表单改变时，值被传递，但当用户不改变时，值不会改变。我需要值始终传递。我该怎么做呢？<div class="app-form container-fluid">    <div class="row">        <div class="c...

角度5:获取表单输入值，无论是否更改-腾讯云开发者社区-腾讯云

问角度5:获取表单输入值，无论是否更改
EN

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

问角度5:获取表单输入值，无论是否更改EN

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

问角度5:获取表单输入值，无论是否更改
EN