Angular reactive form custom validation

Question

I am trying to make reactive form custom validation, From multiple set of inputs [text-boxes, radio button, select], Form get validated with true when any two input fields are filled or entered.

JP_ · Accepted Answer · 2019-09-13 13:34:01Z

1

For custom validation in form , you can set flag by check form control value in if condition and display message in HTML with that flag.

Example:

In the TS file:

flag:boolean;
if(this.demoForm.value.phone && this.demoForm.value.pin){
   this.flag=false;
}else{
   this.flag=true
}

In HTML file:

<span *ngIf='flag'>Your form is invalid</span>

answered Sep 13, 2019 at 13:34

JP_

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