代码示例:(标识:jsck_state_break)
<!DOCTYPE html>
<html>
<body>

<p>单击该按钮可进行带中断的循环。循环应该输出数字 0 到 4,但是当变量 i 等于“3”时,break 语句退出循环。</p>

<button onclick="myFunction()">试一试</button>

<p id="demo"></p>

<script>
function myFunction() {
  var text = "";
  var i;
  for (i = 0; i < 5; i++) {
    if (i === 3) {
      break;
    }
    text += "The number is " + i + "<br>";
  }
  document.getElementById("demo").innerHTML = text;
}
</script>

</body>
</html>
运行结果: