HTML 表单 - 是否需要名称和 ID? [英] HTML Forms - Are name and id required?

问题描述

为什么我需要 表单元素的 name 和 id 属性?

Why do I need the name and id attributes for <input> form elements?

哪些用于POST数据发送，哪些可以排除?

Which is used for POST data sending and which can I exclude?

推荐答案

name 由服务器端使用.如果您计划处理该字段，这是必要的.id 只是这样 label 元素，当屏幕阅读器点击和访问时，可以触发/调用表单控件(输入和选择).

name is used by the server-side. This is necessary if you plan to process the field. id is only so label elements, when clicked and accessed by screen-readers, can trigger/invoke the form controls (inputs and selects).

<form method=POST action="form-processor.php">
    <input name=first_name value=john>
</form>

结果

$_POST = array('first_name' => 'john');

如果方法是GET，则附加到查询字符串中:

If the method is GET, it's appended to the query string:

http://site-name.com/form-handler.php?first_name=john

附加隐藏输入的查询字符串很流行:

It's popular for query string appending with hidden inputs:

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