html中 intput type=text和textera有什么区别？

html-css013

html中 intput type=text和textera有什么区别？,第1张

没啥区别

text是一个文本输入框输入不会自动换行，而textarea是文本区块可以自动换行

<!DOCTYPE html>

<html>

<body>

<form action="/demo/demo_form.asp" id="usrform">

Name: <input type="text" name="usrname">

<input type="submit">

</form>

<br>

<textarea rows="4" cols="50" name="comment" form="usrform">

请在此处输入文本...</textarea>

<p>这个文本区域位于 form 元素之外，但仍然是表单的一部分。</p>

<p><b>注释：</b>IE 中不支持该 form 属性。</p>

</body>

</html>

复制代码试试就知道了

发送html格式的邮件void jButton8_actionPerformed(ActionEvent e) {

try

{//此段代码用来发送带有html信息的邮件

Properties props = new Properties()

Authenticator auth = new Email_Autherticator()

props.put( "mail.smtp.host ",host)

props.put( "mail.smtp.auth ", "true ")

Session session = Session.getDefaultInstance(props,auth)

MimeMessage message = new MimeMessage(session)

//设置邮件正文

String htmltext= " <h1>hello </h1>"+ " <a href=\ " http://www.sina.com.cn\ " target=\ "_blank\ ">click me please! </a>"

message.setContent(htmltext, "text/html ")//text/plain设置邮件的格式因为是带有html文档的，所以用text/html格式

message.setSubject(mail_subject)

// message.setText(mail_body)在使用message.setContent()时候，好象不能用message.setText()

message.setHeader(mail_head_name,mail_head_value)

message.setSentDate(new Date())

Address address = new InternetAddress(mail_from, "sunxiaoming ")

message.setFrom(address)

Address toAddress = new InternetAddress(mail_to)

message.addRecipient(Message.RecipientType.TO,toAddress)

Transport.send(message)

System.out.println( "send ok! ")

}

catch(Exception ex)

{

System.out.println( "faild "+ex)

}

}

void jButton9_actionPerformed(ActionEvent e) {

try

{//此段代码用来发送带有图片的邮件

String file = "./20020423/test.gif "

Properties props = new Properties()

Authenticator auth = new Email_Autherticator()

props.put( "mail.smtp.host ",host)

props.put( "mail.smtp.auth ", "true ")

Session session = Session.getDefaultInstance(props,auth)

MimeMessage message = new MimeMessage(session)

message.setSubject( "Embedded Image ")

Address address = new InternetAddress(mail_from, "sunxiaoming ")

message.setFrom(address)

Address toAddress = new InternetAddress(mail_to)

message.addRecipient(Message.RecipientType.TO,toAddress)

message.setHeader(mail_head_name,mail_head_value)

message.setSentDate(new Date())

BodyPart messageBodyPart = new MimeBodyPart()

String htmlText = " <h1><hello></h1>"+ " <img src=\ "cid:memememe\ ">"//加入图片

messageBodyPart.setContent(htmlText, "text/html ")

//原理同发送附件一样，将邮件看成有多个部分组成的，先设置每一个部分，然后再全部将它们合起来即可。

//Create a related multi-part to combine the parts

MimeMultipart multipart = new MimeMultipart( "related ")

multipart.addBodyPart(messageBodyPart)

//Create part for the image

messageBodyPart = new MimeBodyPart()

//Fetch the image and associate to part

DataSource fds = new FileDataSource(file)

messageBodyPart.setDataHandler(new DataHandler(fds))

messageBodyPart.setHeader( "Content-ID ", "memememe ")

//Add part to multi-part

multipart.addBodyPart(messageBodyPart)

//Associate multi-part with message

message.setContent(multipart)

Transport.send(message)

System.out.println( "send ok! ")

}

catch(Exception ex)

{

System.out.println( "faild "+ex)

}

}

void jButton7_actionPerformed(ActionEvent e) {

try

{//该程序用来接受带有html信息的邮件

Properties props = System.getProperties()

Authenticator auth = new Email_Autherticator()

props.put( "mail.smtp.host ",host)

props.put( "mail.smtp.auth ", "true ")

Session session = Session.getDefaultInstance(props,auth)

Store store = session.getStore( "pop3 ")

store.connect(host,username,password)

//After connecting to the Store,you can get a Folder,which must be opened before you can read messages from it:

Folder folder = store.getFolder( "INBOX ")

folder.open(Folder.READ_WRITE)

Message message[] = folder.getMessages()

for (int i=0,n=message.lengthi <ni++)

// for (int i=0,n=1i <ni++)//only one letter received from inbox //for debug

{

String out_from_person = ((InternetAddress)message[i].getFrom()[0]).getPersonal()

String out_from_address = ((InternetAddress)message[i].getFrom()[0]).getAddress()

System.out.println( "From: "+out_from_person+ "\t ")

System.out.println( "Address: "+out_from_address+ "\t ")

String out_subject = message[i].getSubject()

System.out.println( "Subject: "+out_subject+ "\t ")

//获取邮件的信息，并且对其每一部分进行操作

Part messagePart = message[i]

Object out_content = messagePart.getContent()

if (out_content instanceof Multipart)

{

messagePart = ((Multipart)out_content).getBodyPart(0)

System.out.println( "[ Multipart Message ] ")

}

String out_content_type = messagePart.getContentType()

System.out.println( "CONTENT: "+out_content_type)

jEditorPane1.setText( " ")//将其显示在jEditorPanel上

jEditorPane1.setContentType( "text/html ")

jEditorPane1.setText((String)out_content)

jEditorPane1.setEditable(false)

/*

if (out_content_type.startsWith( "text/plain ") || out_content_type.startsWith( "text/html "))

{

InputStream ipstm = messagePart.getInputStream()

BufferedReader bufreader = new BufferedReader(new InputStreamReader(ipstm))

String thisLine = bufreader.readLine()

while (thisLine != null)

{

System.out.println( "thisLine: "+thisLine)

thisLine = bufreader.readLine()

}

}

*/

System.out.println( "------------------------------------------------------------ ")

message[i].setFlag(Flags.Flag.DELETED,true)

}

folder.close(true)

store.close()

}

catch(Exception ej2)

{

System.out.println(ej2)

}

}

window.onload=function(){

$('#testtd').click(function(){

console.log($('.inputtext').attr("value"))

console.log($('.imgsrc').attr("src"))

})

}

 <table>

 <tr>

<td id="testtd">

<input class="inputtext" value="123" type="text">

<img class="imgsrc" src="1.jpg">

</td>

</tr>

</table>