html运行实例（eg_html5_input_required）-搜寻教程库

代码示例：（标识：eg_html5_input_required）

<!DOCTYPE HTML>
<html>
<body>

<form action="/index/demo/form_current.html" method="get">
Name: <input type="text" name="usr_name" required="required" />
<input type="submit" value="提交" />
</form>

</body>
</html>