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

代码示例：（标识：eg_js_dom_form_elements）

<!DOCTYPE html>
<html>
<body>

<h1>使用 document.forms 查找 HTML 元素</h1>

<form id="frm1" action="/demo/demo_form.asp">
  First name: <input type="text" name="fname" value="Bill"><br>
  Last name: <input type="text" name="lname" value="Gates"><br><br>
  <input type="submit" value="提交">
</form> 

<p>单击“试一试”按钮，显示表单中每个元素的值。</p>

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

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

<script>
function myFunction() {
  var x = document.forms["frm1"];
  var text = "";
  var i;
  for (i = 0; i < x.length ;i++) {
    text += x.elements[i].value + "<br>";
  }
  document.getElementById("demo").innerHTML = text;
}
</script>

</body>
</html>