Angularjs How To Set Radio Button Checked Based On Model

So, you're working on your AngularJS project and trying to figure out how to set a radio button as checked based on a model? No worries, we’ve got you covered! Setting up radio buttons in AngularJS can sometimes be a bit tricky, but once you understand the process, it’s actually quite straightforward.

When it comes to setting a radio button as checked based on a model, you first need to make sure that you have the necessary dependencies in your project. AngularJS provides two directives that are essential for working with radio buttons: `ng-model` and `ng-value`.

The `ng-model` directive binds the value of the radio button to a variable in your AngularJS application. This variable will be used to determine which radio button is selected. On the other hand, the `ng-value` directive sets the value that will be assigned to the variable when a particular radio button is selected.

To start, you should define a variable in your controller that will hold the value of the selected radio button. For example, you can create a variable called `selectedOption`:

$scope.selectedOption = 'option1';

Next, in your HTML file, you can set up your radio buttons using the `ng-model` and `ng-value` directives:

Option 1
 Option 2
 Option 3

In this code snippet, the `selectedOption` variable is bound to the selected radio button. Depending on the value of `selectedOption`, the corresponding radio button will be checked.

If you want to set a default radio button as checked based on the model when the page loads, you can directly assign the value to `selectedOption`. In our example above, `'option1'` will be selected by default because that's the initial value of `selectedOption`.

If you need to dynamically change the selected radio button based on certain conditions in your application, you can simply update the value of `selectedOption` in your controller using AngularJS functions.

And that's it! You now know how to set a radio button as checked based on a model in AngularJS. By understanding how to use the `ng-model` and `ng-value` directives effectively, you can easily manage the selection of radio buttons in your AngularJS application.

Feel free to experiment with different scenarios and customize the code to suit your specific requirements. AngularJS offers a flexible and powerful way to handle user interactions, including radio buttons, so don't hesitate to dive in and explore the possibilities!