JSFiddle - React, Tailwind, and code Playground
HTML
<input id='input1'>
<input id='input2'>
JavaScript
$('#input1').keyup(function(){
console.log('input1.val: ', $('#input1').val())
if($('#input1').val() != $('#input1').attr('prev_val'))
$('#input2').val('change')
else
$('#input2').val('no change')
$('#input1').attr('prev_val', $('#input1').val())
})