Preparation code

<div id="test">
<p>a</p><p>a</p><p>a</p><p>a</p><p class="hello">a</p><p>a</p><p class="world">a</p><p>a</p><p>a</p><p>a</p><p>a</p>
</div>
<script>
  var a = Array.prototype.slice.call(document.querySelectorAll('#test'));
  
  var b = document.querySelectorAll('#test');
  
  var c = document.getElementById('test');
  
  var d = document.querySelectorAll.call(document, '#test');
</script>

Preparation code output

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a[0].nodeName;

b[0].nodeName;

c.nodeName;

d[0].nodeName;

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