CODE EXAMPLE FOR TYPESCRIPT

how to capitalize the first word of a sentence in ionic

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-textarea-test',
  templateUrl: './textarea-test.page.html',
  styleUrls: ['./textarea-test.page.scss'],
})
export class TextareaTestPage implements OnInit {

  someAutoFormattedInput: string;

  constructor() { }

  ngOnInit() {
  }

  onAutoFormatChanged() {
    this.someAutoFormattedInput = this.setFirstLetterToUppercase(this.someAutoFormattedInput);
  }

  private setFirstLetterToUppercase(string:string):string {
    // https://dzone.com/articles/how-to-capitalize-the-first-letter-of-a-string-in
    return string.charAt(0).toUpperCase() + string.slice(1);
  }

}