DOM Common Logic

A button

You must be this tall to ride

let l = document.createElement('label');
l.innerHTML = 'Confirm I am at least 1.4m';
let c = document.createElement('input');
l.append(c);
c.id = 'tall';
let b = document.createElement('button');
b.innerText = 'Ride the Rollercoaster';
b.disabled = true;
b.onclick = ()=>{
  document.body.append('Weeee...');
}
document.body.append(l,b;

let b = document.createElement('button');
b.innerText = 'click me';
b.onclick = ()=>{
  document.body.append('Hello World!');
}
document.body.append(b);

let l = document.createElement('label');
l.innerHTML = 'Confirm I am at least 1.4m';
let c = document.createElement('input');
c.type = 'checkbox';
l.append(c);
c.id = 'tall';
let b = document.createElement('button');
b.innerText = 'Ride the Rollercoaster';
b.disabled = true;
b.onclick = ()=>{
  document.body.append('Weeee...');
}
c.onclick = ()=>{
  if (c.checked){
    b.removeAttribute('disabled');
  }else{
    b.addAttribute('disabled');
  }
}
document.body.append(l,b);