JSFiddle - React, Tailwind, and code Playground

HTML

<input id="password" type="text" / >
<input id="password2" type="text" / >
<input type="button" value="check" id="btn" />

JavaScript

function password_check(){  
  var password2 = $('#password2').val(), 
      password = $('#password').val();
  password2Filled = (password2.length > 7 && password2 == password) ? 1:0;
}

function upload(){
    console.log(password2Filled);
}

$("#btn").on('click', function() {
    password_check();
    upload();
});