Find and Replace String Methods 2

document.addEventListener('DOMContentLoaded', function( ){ 
    let btn = document.getElementById('btnSearch'); 
    btn.addEventListener('click', doFindAndReplace);
});

function doFundAndReplace(ev){ 
    ev.preventDefault( );
    let find = document.getElementById('find').value;
    let replace = document.getElementById('replace').value; 
    let p = document.querySelector('.target');

    while( p.textContent.indexOf(find) != - 1 ){
        p.textContent = p.textContent.replace(find, replace);	// the replace method takes 2 arguments
                                                                // only replaces the first instance it finds
    }
}