Introduction to the AngularJs forms validation

Introduction to the AngularJs forms validation 

AngularJs is generally considered as possible for the complete web application of the website. In this booklet, we will discover how important are the angles to build larger codes that require larger systems, many jobs, and validations.

In the beginning, the team to make the forms was easy.

Before becoming an open source, English as a development tool is primarily intended for web designers. The designs allow designers to improve their usual web pages and allow them to guarantee and maintain visual characteristics (see here).

The original idea was to allow technicians to use HTML tags or additional functions to incorporate the power of the web without having to write more than javascript.

Using Angular for form validation

From the 44k regeneration line, the fencing lanes contain many interesting features that can be used for active identification.

For example, in the following form to make the user, do the following (an example of mediation):

• As a result, they show the wrong places when writing

• Provide deep messages when someone uses the site

• Avoid the mailbox until all the necessary information is available, check the terms and conditions

Modified presentation

When the angular collection of DOM requests in the application process, a structured signature is required to shape the symbols. In the above case structure, this means that the HTML form will start like this

How do these built-in state classes work?

These classes are used for the individual form and location so you can use it to help with the form. Angular provides the following situations:

• Segment: This means that the form or idea is in the initial state: there are no places where it is touched or controlled

• touch: the user has pressed the control or the form, but does not have to change

• Cleaning: the user was doing the performance.

• Not wrong: Form control has been prepared, but includes an incorrect value

• Values Ng: use the control of the device at the correct value

For example, a cleaning condition can be used as a red color around the wrong location.

Angular built-in validation directives:

Any garden field recognition can be automatically translated into HTML. For example, the secret site has the following certificates:

• Location is required

• A minimum mortality rate of 6 characters.

• A maximum length of 10 characters

These announcements were announced as needed, ng-minlength and

ng-maxlength directive

The appropriate form for the form with messages.

Although the user uses the information, it is useful to show a message about the next step in the validation process, for example:

• First, show where the site is needed

• When the person begins to write, a message indicating the minimum length appears.

Conclusion:

By using configuration schemes and other components, you can add the application to the most valid formats for approvals using a small amount of code

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