也许这篇文章能帮你http://blog.angular-university.io/introduction-to-angular-2-forms-template-driven-vs-model-driven/个忙
在这种方法中，必须使用FormControl，然后观察值的变化，然后对值应用掩码.例如:
...
form: FormGroup;
...
ngOnInit(){
this.form.valueChanges
.map((value) => {
// Here you can manipulate your value
value.firstName = value.firstName.trim();
return value;
})
.filter((value) => this.form.valid)
.subscribe((value) => {
console.log("Model Driven Form valid value: vm = ",JSON.stringify(value));
});
}