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HTML Forms(转)

内容来自HTML Dog:http://htmldog.com/guides/html/beginner/forms/

Forms

Forms被用来收集用户的输入,它们通常被作为web应用的接口。

在实际中经常用到的相关标签 forminputtextareaselect 以及 option.

 

form

一个表单元素看起来是这样的

<form action="processingscript.php" method="post"></form>

action决定表单内容将被发送到哪里。

method决定了数据的发送形式。

 

input

input是表单世界里的爸爸。

想看它的整个家族,请参看这里。(还有例如文件上传等等)

像br和img一样,input是不包含内容的标签,不需要“关闭”

它具有极为丰富的类型,下面仅仅是最常用的几种,认真看一下就清楚了。

技术分享

 

textarea

<textarea rows="5" cols="20">A big load of text</textarea>

 

select

<select>    <option>Option 1</option>    <option>Option 2</option>    <option value="third option">Option 3</option></select>

 select需要和option配合使用,

提交值默认是<option></option>中间的文本,如果设置了value,那么提交的是value的值。

select也是有默认选项的,例如,在上面的代码上补充一句

<option selected>Rodent</option>

将呈现如下情景

 

Names

上面的标签看上去都很漂亮,

然而一旦把表单提交给一个“表单处理脚本”,它们都会被直接无视掉!!!

原因是它们没有名字!所以上面的所有标签都需要修改一下,

改成这样——>>>>> <input type="text" name="talkingsponge">.

例如,诺亚方舟的联络表应该是这样的:

<form action="contactus.php" method="post">    <p>Name:</p>    <p><input type="text" name="name" value="Your name"></p>    <p>Species:</p>    <p><input name="species"></p>    <!-- remember: ‘type="text"‘ isn‘t actually necessary -->    <p>Comments: </p>    <p><textarea name="comments" rows="5" cols="20">Your comments</textarea></p>    <p>Are you:</p>    <p><input type="radio" name="areyou" value="male"> Male</p>    <p><input type="radio" name="areyou" value="female"> Female</p>    <p><input type="radio" name="areyou" value="hermaphrodite"> An hermaphrodite</p>    <p><input type="radio" name="areyou" value="asexual"> Asexual</p>    <p><input type="submit"></p></form>

Name:

Species:

Comments:

Are you:

Male

Female

An hermaphrodite

Asexual

 

一个完整的demo

就一篇文章而言,下面的标签已经完全够用了

<!DOCTYPE html><html>    <head>        <title>My first web page</title>        <!-- This is a comment, by the way -->    </head>    <body>        <h1>My first web page</h1>        <h2>What this is</h2>        <p>A simple page put together using HTML. <em>I said a simple page put together using HTML.</em> A simple page put together using HTML. A simple page put together using HTML. A simple page put together using HTML. A simple page put together using HTML. A simple page put together using HTML. A simple page put together using HTML. A simple page put together using HTML.</p>        <h2>Why this is</h2>        <ul>            <li>To learn HTML</li>            <li>                To show off                <ol>                    <li>To my boss</li>                    <li>To my friends</li>                    <li>To my cat</li>                    <li>To the little talking duck in my brain</li>                </ol>            </li>            <li>Because I have fallen in love with my computer and want to give her some HTML loving.</li>        </ul>        <h2>Where to find the tutorial</h2>        <p>            <a href="http://www.htmldog.com"><img src="http://www.htmldog.com/badge1.gif" width="120" height="90" alt="HTML Dog"></a>        </p>        <h3>Some random table</h3>        <table>            <tr>                <td>Row 1, cell 1</td>                <td>Row 1, cell 2</td>                <td>Row 1, cell 3</td>            </tr>            <tr>                <td>Row 2, cell 1</td>                <td>Row 2, cell 2</td>                <td>Row 2, cell 3</td>            </tr>            <tr>                <td>Row 3, cell 1</td>                <td>Row 3, cell 2</td>                <td>Row 3, cell 3</td>            </tr>            <tr>                <td>Row 4, cell 1</td>                <td>Row 4, cell 2</td>                <td>Row 4, cell 3</td>            </tr>        </table>        <h3>Some random form</h3>        <p><strong>Note:</strong> It looks the part, but won‘t do a damned thing.</p>        <form action="somescript.php" method="post">            <p>Name:</p>            <p><input name="name" value="Your name"></p>            <p>Comments: </p>            <p><textarea rows="10" cols="20" name="comments">Your comments</textarea></p>            <p>Are you:</p>            <p><input type="radio" name="areyou" value="male"> Male</p>            <p><input type="radio" name="areyou" value="female"> Female</p>            <p><input type="radio" name="areyou" value="hermaphrodite"> An hermaphrodite</p>            <p><input type="radio" name="areyou" value="asexual" checked> Asexual</p>            <p><input type="submit"></p>        </form>    </body></html>Advertise Here!

 

 

HTML Forms(转)