how to search something in a particular div javascript code example

Example 1: search divs by name

document.getElementById('search').addEventListener('keyup', search);
function search() {
        var input = document.getElementById("search input");
        var filter = input.value.toLowerCase();
        var nodes = document.getElementsByClassName('target div');
      
        for (i = 0; i < nodes.length; i++) {
          if (nodes[i].innerText.toLowerCase().includes(filter)) {
            nodes[i].style.display = "block";
          } else {
            nodes[i].style.display = "none";
          }
        }
}
//All divs need to have the same class

Example 2: queryselector change alternative

var nome_cognome = document.querySelectorAll('.modal.fade input').forEach((input) => {
	if ( input.classList.contains('.nome-cognome') ) {
		input.addEventListener('keypress', () => {
		    console.log( input.value );
		});
	}
});