通过标签引用，break 语句可用于跳出任何 JavaScript 代码块 - 在线编辑器

          <script>
  cars = ["BMW", "Volvo", "Saab", "Ford"];
  list: {
    document.write(cars[0] + "<br>");
    document.write(cars[1] + "<br>");
    document.write(cars[2] + "<br>");
    break list;
    document.write(cars[3] + "<br>");
    document.write(cars[4] + "<br>");
    document.write(cars[5] + "<br>");
  }
</script>
        