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< input> 表单元素的名称和 id 属性？

哪些用于POST数据发送，哪些可以排除？

解决方案

如果您打算处理该字段，则服务器端使用 name ，这是必需的。 id 只有在标签元素被屏幕阅读器点击并访问时才能触发/调用窗体控件（

 < 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 ，它会被追加到查询字符串：

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


对于带有隐藏输入的查询字符串追加很流行：



< / p> input type =hiddenname =qvalue =1>

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

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

解决方案

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, selects ).

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

results in

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

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

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

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

<input type="hidden" name="q" value="1">

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