Custom validation in Angular Reactive form

How we can create custom validator in Angular?

There are few validator that Angular provides for example required, maxlength, minlength, email etc. But that is not enough for our application some time according to our project requirement we need more than what Angular provide we can create custom validator to solve our problem. In this example i have created html select option validator
with Select Value. If user hit the submit button without selecting value from html option then inline error will be generate. Select is not fixed value we can change the value according to our needs suppose we want to validate “Please select” then we can pass as an argument that is what i have done here.Demo Githhub Stackblitz

10 thoughts on “Custom validation in Angular Reactive form

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