JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" name="priv" value="1"/>
<input type="checkbox" name="priv" value="2"/>
<input type="checkbox" name="priv" value="3"/>
<input type="checkbox" name="priv" value="4"/>
<input type="checkbox" name="priv" value="5"/>
<input type="checkbox" name="priv" value="#Smith, .David$"/>
<input type="checkbox" name="priv" value="7"/>
 <input type="checkbox" name="priv" value="8"/>

JavaScript

$(":checkbox[value=4]").attr("checked","true");
$("input[type=checkbox][value=5]").attr("checked","true");
   $("input[type=checkbox][value='#Smith, .David$']").attr("checked","true");