Create secure password by provided human pattern.

password-genrator.js

function my_password(password_string){
    var new_string = [];
    new_string.push(password_string.charCodeAt(0));
    new_string.push(password_string.trim());
    new_string.push(password_string.charCodeAt(password_string.length-1));
    return btoa(new_string.join(''));
}

var password_string = '<your string>'
console.log(my_password(password_string));