代码示例:(标识:html5_input_formnovalidate)
<!DOCTYPE html>
<html>
<body>

<h1>input formnovalidate 属性</h1>

<form action="/index/demo/form_current.html">
  <label for="email">Enter your email:</label>
  <input type="email" id="email" name="email" required><br><br>
  <input type="submit" value="提交">
  <input type="submit" formnovalidate="formnovalidate" value="不做验证的提交">
</form>

<p><b>注释:</b>Safari 10 或更早的版本不支持 input 标签的 formnovalidate 属性。</p>

</body>
</html>
运行结果: