Give checked property to radio button inside a loop

loop through radio buttons javascript
radio button in foreach loop
how to set radio button checked in javascript
how to retain radio button value in javascript
uncheck radio button javascript
javascript radio button value if checked
how to get radio button list selected value in javascript
javascript radio button checked

I recently got into angular and was making something when I had a code like this

<th class="" scope="col" *ngFor="let rating of ratings">
   <div class="form-check form-check-inline">
      <input class="form-check-input" type="radio" [name]="param.paramId" [id]="param.paramId" [value]="rating" (change)="onSelectionChange(rating, param.paramId, coworker.empId)">
   </div>
</th>

Here If I put checked in the radio button it default checks the last radio button in the loop. Can anyone help me and tell how to default check the first radio button? Thanks in Advance.

Try:

<th class="" scope="col" *ngFor="let rating of ratings; let last = last">
   <div class="form-check form-check-inline">
      <input class="form-check-input" type="radio" [name]="param.paramId" [id]="param.paramId" [value]="rating" (change)="onSelectionChange(rating, param.paramId, coworker.empId)" [checked]="last">
   </div>
</th>

or

<th class="" scope="col" *ngFor="let rating of ratings">
   <div class="form-check form-check-inline">
      <input class="form-check-input" type="radio" [name]="param.paramId" [id]="param.paramId" [value]="rating" (change)="onSelectionChange(rating, param.paramId, coworker.empId)" [checked]="rating.id === 5">
   </div>
</th>

Hope it helps :)

If those will not work, try to bind property to [(ngModel)]="entry.id" then:

ngOnInit() {
    this.entry.id = '5'; // last value
}

Looping through Radio Buttons / The Checked Property, In order to find which radio button within a group has been checked, you must loop through the entire group. Take a look at the HTML form. This form's name is "form" and contains a radio group named, "group1". Radio Button checked and defaultChecked Properties The checked property of a radio button tells you whether it is currently selected. The defaultChecked property of a radio button tells you whether it includes the checked attribute in the markup, as the first radio button shown below does:

Please try following code for last checked.

<th class="" scope="col" *ngFor="let rating of ratings; let isLast=last ">
   <div class="form-check form-check-inline">
      <input class="form-check-input" type="radio" 
      [name]="param.paramId" [id]="param.paramId" 
      [value]="rating"
       [checked]="isLast"
       (change)="onSelectionChange(rating, param.paramId, coworker.empId)">
   </div>
</th>

OR

Please try following code for first checked.

<th class="" scope="col" *ngFor="let rating of ratings; let isFirst=first">
   <div class="form-check form-check-inline">
      <input class="form-check-input" type="radio" 
      [name]="param.paramId" [id]="param.paramId" 
      [value]="rating"
       [checked]="isFirst"
       (change)="onSelectionChange(rating, param.paramId, coworker.empId)">
   </div>
</th>

JavaScript to Get Value of Selected Radio Button, How to get the value of the selected radio button in a group using JavaScript. Inside the function we get references to the radio buttons whose name matches that As we iterate through the loop, if the current radio button's checked property� In Windows Forms, you are allowed to set a value which represents the RadioButton control is checked using the Checked Property of the RadioButton. If the value of this property is set to true, then RadioButton is checked and if the value of this property is set to false, then RadioButton is not checked.

Try set the index on the loop and add the checked property when index == 0; for first radio to be checked and use let last = last; otherwise

<th class="" scope="col" *ngFor="let rating of ratings;let i = index">
   <div class="form-check form-check-inline">
      <input class="form-check-input" type="radio" [name]="param.paramId" [id]="param.paramId" [value]="rating" [checked]="(i === 0) ? 'checked' : ''" (change)="onSelectionChange(rating, param.paramId, coworker.empId)">
   </div>
</th>

Radio Button checked and defaultChecked Properties, The checked property of a radio button tells you whether it is currently selected. radio buttons in the form above, and then click the "Check if Default" button to of radio buttons with specified name var radios = form.elements[name]; // loop� Examples. The following code example evaluates a ListBox selection and the Checked property of a RadioButton.When a specified item is selected from the list box, the PerformClick method of another RadioButton is called.

Radiobuttons, Radio buttons should be used whenever you want to give your user a instead of allowing zero or several selections within a group of options, a radio button a radio button is simply an input element with the type property set to radio, like this : If you check out the previous examples, you will notice that none of the radio� As we iterate through the loop, if the current radio button's checked property evaluates to true, we hold its value in a variable and break out of the for loop. The function returns the variable (val), which contains either the value of the selected radio button or undefined if none are selected.

Looping Through Checkboxes by Name With jQuery, The checkboxes behave much like a set of radio buttons where only a single value will be Within the "script" tags, we are using the jQuery attributeContainsWord If the values are not equal, we set the "checked" property of the checkbox to� i am coding a page for the attendance of students and in the page all the students name are retrieved dynamically from database using while loop and inside the while loop i have used a radio button. my problem is the radio button work's correctly but i am unable to insert the value of radio buttons into database.here is my code :

How to check whether a radio button is selected with JavaScript , Given a form containing radio button element and the task is to check whether Using Input Radio checked property: The Input Radio checked� 2. checked: checked attribute in radio button is used to set the current state of a radio button. We can set it either true or false where true shows the checked state and false shows unchecked state of a radio button. As usual default value of checked attribute is false. We can also set the current state in

Comments
  • Show the ts Code
  • @PrashantPimpale What part of ts code do you want to see? It has a lot of code.
  • ratings variable and expected output
  • you can use the index of the ngFor and just add the checked to true when its the first element stackoverflow.com/a/42059597/1113766
  • @PrashantPimpale Thanks for the help... Problem got solved :)
  • Thanks the first one helped. :)