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Node与Express开发(第2版)
book

Node与Express开发(第2版)

by Ethan Brown
June 2021
Intermediate to advanced
290 pages
9h 21m
Chinese
Posts & Telecom Press
Content preview from Node与Express开发(第2版)
表单处理
|
79
<form action="/process" method="POST">
<input type="hidden" name="hush" val="hidden, but not secret!">
<div>
<label for="fieldColor">Your favorite color: </label>
<input type="text" id="fieldColor" name="color">
</div>
<div>
<button type="submit">Submit</button>
</div>
</form>
需要注意的是,
<form>
标签里的方法明确指定为
POST
,如果没有指定,默认就是
GET
。
action
属性指定了(表单提交后)接收表单数据的
URL
。如果省略这个字段,那么表单将
被提交到加载这个表单的同一个
URL
。建议最好提供一个合法的
action
,即便你使用的是
Ajax
(这是为了避免数据丢失,更多信息参见第
22
章
)。
从服务器的角度来看,
<input>
字段中的
name
是个重要属性:这就是服务器标识字段的方
式。
name
属性跟
id
属性不一样,这一点一定要理解,
id
属性一般只用于样式和前端功能
(它不会被传到服务器)。
注意那个隐藏域:它并不会显示在浏览器上。但是你也不能将其用于密码或敏感信息,因
为用户只需查看页面源代码,隐藏域就一览无余了。
HTML
并不限制一个页面里有多少个表单
(很遗憾,早期一些服务器端框架就有这个限 ...
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Publisher Resources

ISBN: 9787115565099