使用一个字符作为分隔符

<p id="demo">单击按钮显示分割后的数组</p>

<button onclick="myFunction()">点我</button>

<script>

  function myFunction() {

    var str = "How are you doing today?";

    var n = str.split("o");

    document.getElementById("demo").innerHTML = n;

  }

</script>