Maxim Bredikhin

let abuse = ['блин', 'черт'];

let inp = document.querySelector('#text');
let out = document.querySelector('#textOut');

inp.addEventListener ('blur', () => {
  let words = inp.value.split(' ');
  
  words.forEach(element => {
  	if(!(abuse.indexOf(element) == -1)) {
  		element = '***';
  	}
  });
 
  out.innerHTML = words.join(' ');
  inp.value = '';
})