get first char from each word in angular

 var myStr1 = "hamid ali";

var matches = myStr1.match(/\b(\w)/g);

console.log(matches.join('')

setValue vs patch value in angular

 To set all FormGroup values use, setValue:

this.myFormGroup.setValue({

  name: 'h1', 

  designation: 'se'

});

this.myFormGroup.patchValue({

  name: 'h1', 

  // designation: 'se' (can be omitted)

});