Multiple radio button groups in one form
Just do one thing, We need to set the name property for the same types. for eg.
Try below:
<form>
<div id="group1">
<input type="radio" value="val1" name="group1">
<input type="radio" value="val2" name="group1">
</div>
</form>
And also we can do it in angular1,angular 2 or in jquery also.
<div *ngFor="let option of question.options; index as j">
<input type="radio" name="option{{j}}" value="option{{j}}" (click)="checkAnswer(j+1)">{{option}}
</div>
This is very simple you need to keep different names of every radio input group.
<input type="radio" name="price">Thousand<br>
<input type="radio" name="price">Lakh<br>
<input type="radio" name="price">Crore
</br><hr>
<input type="radio" name="gender">Male<br>
<input type="radio" name="gender">Female<br>
<input type="radio" name="gender">Other
Set equal name
attributes to create a group;
<form>
<fieldset id="group1">
<input type="radio" value="value1" name="group1">
<input type="radio" value="value2" name="group1">
</fieldset>
<fieldset id="group2">
<input type="radio" value="value1" name="group2">
<input type="radio" value="value2" name="group2">
<input type="radio" value="value3" name="group2">
</fieldset>
</form>