blocks|key|1385571|text|你不需要ngIf来改变属性的值。您可以只对条件属性使用一段javascript：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1385572|<input+
+++type="radio"
+++name="gender"
+++id="female"
+++[attr.checked]="respondent.genderType=='1'+?+'checked'+:+null"+/>|code-block|syntax|javascript|1385573|另一种选择是以“角度的方式”使用表单，或者使用ngModel，或者使用Reactive+Forms。|offset|length|1385574|entityMap|0|LINK|mutability|MUTABLE|url|https://angular.io/api/forms/NgModel|1|https://angular.io/guide/reactive-forms^0|0|0|N|7|0|Z|E|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@$I|X|J|Y|1|Z]|$I|10|J|11|1|12]]|A|$]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

<p>You don't need ngIf to change the value form a property. You can just use a block of javascript for a conditional attribute:</p>

<pre><code>&lt;input 
   type="radio"
   name="gender"
   id="female"
   [attr.checked]="respondent.genderType=='1' ? 'checked' : null" /&gt;
</code></pre>

<p>Another option is to use forms in an "Angular way", either with <a href="https://angular.io/api/forms/NgModel" rel="nofollow noreferrer">ngModel</a> or with <a href="https://angular.io/guide/reactive-forms" rel="nofollow noreferrer">Reactive Forms</a>.</p>


blocks|key|1405098|text|假设genderType+1是女性，2是男性，您只需在checked属性中绑定它。你不需要ngIf。NgIf用于显示或隐藏html元素。试试这个(我也去掉了disabled属性)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1405099|<div+class="k-form-field">
+++++<span>Gender</span>
++++++++++<input+type="radio"+name="gender"+id="female"+class="k-radio"+[attr.checked]="respondent.genderType+===+'1'+?+'checked'+:+null">
++++++++++<label+class="k-radio-label"+for="female">Female</label>

++++++++++<input+type="radio"+name="gender"+id="male"+class="k-radio"+[attr.checked]="respondent.genderType+===+'2'+?+'checked'+:+null">
++++++++++<label+class="k-radio-label"+for="male">Male</label>
++</div>|code-block|syntax|javascript|1405100|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|$]]

<p>Assuming genderType 1 is female and 2 is male, you only has to bind that in the checked attribute. You don't need the ngIf. NgIf is to display or hide a html element. Try with this (also I removed the disabled attribute):</p>

<pre><code>&lt;div class="k-form-field"&gt;
     &lt;span&gt;Gender&lt;/span&gt;
          &lt;input type="radio" name="gender" id="female" class="k-radio" [attr.checked]="respondent.genderType === '1' ? 'checked' : null"&gt;
          &lt;label class="k-radio-label" for="female"&gt;Female&lt;/label&gt;

          &lt;input type="radio" name="gender" id="male" class="k-radio" [attr.checked]="respondent.genderType === '2' ? 'checked' : null"&gt;
          &lt;label class="k-radio-label" for="male"&gt;Male&lt;/label&gt;
  &lt;/div&gt;
</code></pre>


blocks|key|1405102|text|对我有效的最终答案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1405103|<div+class="k-form-field">
++++<span>Gender</span>
++++++<input+type="radio"+name="gender"+id="female"+class="k-radio"+[attr.checked]+="respondent.genderType=='2'+?+'checked'+:+null"+disabled>
++++++<label+class="k-radio-label"+for="female">Female</label>

+++++++<input+type="radio"+name="gender"+id="male"+class="k-radio"+[attr.checked]+="respondent.genderType=='1'+?+'checked'+:+null"+disabled>
+++++++<label+class="k-radio-label"+for="male">Male</label>
</div>|code-block|syntax|javascript|1405104|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|$]]

<p>final answer that works for me</p>

<pre><code>&lt;div class="k-form-field"&gt;
    &lt;span&gt;Gender&lt;/span&gt;
      &lt;input type="radio" name="gender" id="female" class="k-radio" [attr.checked] ="respondent.genderType=='2' ? 'checked' : null" disabled&gt;
      &lt;label class="k-radio-label" for="female"&gt;Female&lt;/label&gt;

       &lt;input type="radio" name="gender" id="male" class="k-radio" [attr.checked] ="respondent.genderType=='1' ? 'checked' : null" disabled&gt;
       &lt;label class="k-radio-label" for="male"&gt;Male&lt;/label&gt;
&lt;/div&gt;
</code></pre>


<p>I am working on Angular 5 application. I got radio button for Gender which value is pre-populated radio selection based on value it receving and I need to know how to use ng-if inline in html template. GenderType: string where value 1 is for male and 2 for female.</p>

<p>I have tried *ngIf but its not working out</p>

<pre><code> &lt;div class="k-form-field"&gt;
     &lt;span&gt;Gender&lt;/span&gt;
          &lt;input type="radio" name="gender" id="female" class="k-radio" *ngIf:{{respondent.genderType='1'}} === checked="checked" disabled&gt;
           &lt;label class="k-radio-label" for="female"&gt;Female&lt;/label&gt;

          &lt;input type="radio" name="gender" id="male" class="k-radio" disabled&gt;
             &lt;label class="k-radio-label" for="male"&gt;Male&lt;/label&gt;
  &lt;/div&gt;
</code></pre>


how to bind Pre-populated data from object to radio button in Angular 5

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。

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我正在开发Angular 5应用程序。我得到了性别的单选按钮，它的值是基于它接收的值预先填充的单选按钮，我需要知道如何在html模板中使用ng-if内联。GenderType:字符串，值1表示男性，2表示女性。我试过了，但不起作用 <div class="k-form-field">     <span>Gender<...

问如何将预先填充的数据从对象绑定到Angular 5中的单选按钮
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问如何将预先填充的数据从对象绑定到Angular 5中的单选按钮EN