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ganqqwerty/app.component.ts

Created June 18, 2019 11:49
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app.component.ts
this.myForm.get('myCheckbox').valueChanges
.subscribe(value => {
if(value) {
this.myForm.get('myEmailField').setValidators(this.emailValidators.concat(Validators.required))
} else {
this.myForm.get('myEmailField').setValidators(this.emailValidators);
}
});
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