var to const in exemple

I suggest changing VAR to CONST to show the best practice.

Author: merciermk

files/en-us/web/api/document_object_model/locating_dom_elements_using_selectors/index.html

@@ -27,11 +27,11 @@ Selectors
 
 <p>The selector methods accept one or more comma-separated selectors to determine what element or elements should be returned. For example, to select all paragraph (<code>pcode>) elements in a document whose CSS class is either <code>warningcode> or <code>notecode>, you can do the following:p>
 
-<pre class="brush: js">var special = document.querySelectorAll("p.warning, p.note");pre>
+<pre class="brush: js">const special = document.querySelectorAll("p.warning, p.note");pre>
 
 <p>You can also query by ID. For example:p>
 
-<pre class="brush: js">var el = document.querySelector("#main, #basic, #exclamation");pre>
+<pre class="brush: js">const el = document.querySelector("#main, #basic, #exclamation");pre>
 
 <p>After executing the above code, <code>elcode> contains the first element in the document whose ID is one of <code>maincode>, <code>basiccode>, or <code>exclamationcode>.p>