Attr with jQuery

html jQuery
<div id="elemAttr" yolo="nop">Element with attribute</div>
<button onclick="addAttribut()">Add attribute</button>
<button onclick="removeAttribut()">Remove attribute</button>

<script>
  function addAttribut() {
    $("#elemAttr").attr("yolo", "yep")
  };
  function removeAttribut() {
    $("#elemAttr").removeAttr("yolo");
  };
</script>
Element with attribute