JSFiddle - React, Tailwind, and code Playground

HTML

<select id="p1Status" name="pin1Status" class="elementToGet">
   <option value="on" selected="selected">on</option>
   <option value="off">off</option>
</select>

<select id="p1Status" name="pin1Status" class="elementToGet">
   <option value="on">on</option>
   <option value="off" selected="selected">off</option>
</select>

JavaScript

var elems = document.getElementsByClassName('elementToGet'),
    e     = [];
for (var i=0; i < elems.length ;i++){
    e.push( elems[i].value );
}
console.log(e);