AngularJS form verification example

Angular has form validation on its own, directly on the code:

1. When input is not started:


2. When the input does not conform to the rule:


3. When entering the compliance rule:


The summary method has several points:

1. Bind the instruction Ng-pattern in input, fill in the regular.

2. The Require attribute can be written directly in input, indicating that the item must be filled in.

3. Define a different display state span and control its display by Ng-show.

4. Two commonly used states, $invalid as invalid, $valid as valid.

5. You can use the NG-DISABLED directive to disable submitting forms when the form validation is not passed.