x 输出结果 - 在线编辑器

          <p id="demo">单击按钮显示负无穷大</p>
<button onclick="myFunction()">点我</button>
<script>
  function myFunction() {
    var x = 100;
    var demo = document.getElementById("demo");
    demo.innerHTML = x.NEGATIVE_INFINITY;
  }
</script>
        