Javascript-форум - При выборе одного input="radio" другой input="radio" станет не активный

<h2>Доставка</h2> <div id="sendForm"> <form action=""> <input type="radio" id="deliveri_1" name="deliveri" value="1"> <input type="radio" id="deliveri_2" name="deliveri" value="2"> <input type="radio" id="deliveri_3" name="deliveri" value="3">  <input type="radio" id="deliveri_4" name="deliveri" value="4"> </form> </div> <h2>Оплата</h2> <input type="radio" id="payment_1" value="1"> <input type="radio" id="payment_2" value="2">  <input type="radio" id="payment_3" value="3"> <input type="radio" id="payment_4" value="4"> <script> var selected = document.querySelectorAll('input'), makeDisable = document.getElementById('payment_2'), formHolder = document.getElementById('sendForm'); formHolder.addEventListener('click', function setDisabled(e){ if(e.target.tagName == 'INPUT'){ switch(e.target.id){ case 'deliveri_3': makeDisable.disabled=true makeDisable.setAttribute('class', 'random') return null; case 'deliveri_4': makeDisable.setAttribute('class', 'random') makeDisable.disabled=false return null; default: makeDisable.removeAttribute('class', 'random'); makeDisable.disabled=false return null; } } else if(e.target.tagName == 'DIV'){ return false } }) </script>

Цитата:

Сообщение от Царь Леонид

Это лучше, чем через setAttribute делать?

если классов в элементе много, то это лучший вариант.

<!DOCTYPE html>

<html>
<head>
  <title>Untitled</title>
  <meta charset="utf-8">
  <style type="text/css">
   .random:before {
  text-align: center;
  content: 'random';
  display: block;
  margin-top: 12px;
  margin-left: -16px;
  width: 52px;
  height: 12px;
  border-radius: 6px;
  background: #32CD32;
  box-shadow: 0 2px 5px rgba(0,0,0,.3);
  transition: all .2s;
}

 </style>

  </script>
</head>

<body>

<h2>Доставка</h2>
<form action="">
<input type="radio" id="deliveri_1" name="deliveri" value="1">
<input type="radio" id="deliveri_2" name="deliveri" value="2">
<input type="radio" id="deliveri_3" name="deliveri" value="3"> <!-- Если выбрали этот то... -->
<input type="radio" id="deliveri_4" name="deliveri" value="4">
</form>

<h2>Оплата</h2>
<input type="radio" id="payment_1" value="1">
<input type="radio" id="payment_2" value="2"> <!-- ...то этот станет недоступен -->
<input type="radio" id="payment_3" value="3">
<input type="radio" id="payment_4" value="4">

<script>
var form = document.querySelector('form');
var makeDisable = document.getElementById('payment_2');
var d3 = document.getElementById('deliveri_3');
var d4 = document.getElementById('deliveri_4');
form.addEventListener('change', function(event){
   d3.checked?(makeDisable.disabled=true,makeDisable.checked=false):makeDisable.disabled=false;
  (d3.checked||d4.checked) ? makeDisable.classList.add("random") : makeDisable.classList.remove("random")
})


</script>


</body>
</html>