ngSubmitonSubmit

ngSubmit is a directive in Angular that is used to handle form submissions. It is applied to the form element and allows you to specify a method to be called when the form is submitted. When the user triggers a form submission, for example, by clicking a submit button or pressing Enter in an input field, the ngSubmit directive executes the expression provided to it.

The primary purpose of ngSubmit is to decouple the form submission logic from the native browser's default submission behavior. Instead of the page reloading or navigating to a new URL, the ngSubmit directive allows you to intercept the submission event and handle it within your Angular application. This is crucial for single-page applications (SPAs) where you want to manage data submission asynchronously, typically via HTTP requests, without interrupting the user experience.

To use ngSubmit, you first define a method in your component's TypeScript file that will contain the logic to be executed upon submission. Then, in your HTML template, you bind this method to the ngSubmit directive on the form element. For instance, if your component has a method named `onSubmit()`, you would add the attribute `ngSubmit="onSubmit()"` to your form tag. This ensures that whenever the form is submitted, your `onSubmit()` method is called, giving you full control over the submission process.