Show Button by

by Alvin Olavarrieta

HTML

<input type="checkbox" name="1" value="">
<br />
<input type="checkbox" name="2" value="">
<br />
<input type="checkbox" name="3" value="">
<br />
<input type="radio" name="4" value="">
<br />
<input type="radio" name="4" value="">
<br />
<input type="radio" name="5" value="">
<br />
<input type="radio" name="5" value="">
<br />
<button type="button">Button</button>

JavaScript

$('button').hide();

$("input[type='checkbox'], input[type='radio']").on("click", function() {

  console.log($("input:checked").length);

  if ($("input:checked").length >= 5) {
    $('button').fadeIn();
  } else {
    $('button').fadeOut();
  }
});