html运行实例（eg_js_fornext）-搜寻教程库

代码示例：（标识：eg_js_fornext）

<!DOCTYPE html>
<html>
<body>

<p>单击按钮循环一段代码五次。</p>

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

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

<script>
function myFunction() {
  var x = "", i;
  for (i=0; i<5; i++) {
    x = x + "数字是：" + i + "<br>";
  }
  document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>