如何从一个标签中获取多个值

<div id="myDiv" data-values="value1,value2,value3"></div>

var values = document.getElementById("myDiv").dataset.values.split(",");

<div id="myDiv" class="value1 value2 value3"></div>

var values = document.getElementById("myDiv").className.split(" ");

var myObj = {
  value1: "some value 1",
  value2: "some value 2",
  value3: "some value 3"
};

var values = [myObj.value1, myObj.value2, myObj.value3];