html运行实例（jsck_state_for_s2_break）-搜寻教程库

代码示例：（标识：jsck_state_for_s2_break）

<!DOCTYPE html>
<html>
<body>

<p>单击该按钮可循环遍历拥有四个元素的数组的索引，但当 i 等于“3”时退出循环。</p>

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

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

<script>
function myFunction() {
  var cars = ["BMW", "Volvo", "Saab", "Ford"];
  var text = "";
  var i;
  for (i = 0;; i++) {
    if (i == 3) {
      break;
    }
    text += cars[i] + "<br>";
  }

  document.getElementById("demo").innerHTML = text;
}
</script>

</body>
</html>