HTML怎么做评论框

HTML怎么做评论框,第1张

<!--最简单的评论框-->

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

    <form>

        <table>

            <tr>

                <td>评论框</td>

                <td>

                    <textarea>

                    </textarea>

                </td>

            </tr>

        </table>

    </form>

</body>

</html>

用PHP来制作评论系统

在PHP and mySQL的环境下运行。有三个文件:comments.php, 是用来显示[评论的, commentadd.php, 用来处理评论内容的, and commentform.html 通过FROM来提交评论。

1.首先建立一个数据库,如果已经建立则建立一个符合条件的表:

CREATE TABLE `comtbl` (

`postID` INT NOT NULL AUTO_INCREMENT ,

`postTITLE` TEXT NOT NULL ,

`posterNAME` TEXT NOT NULL ,

`posterEMAIL` TEXT NOT NULL ,

`postTIME` TIMESTAMP NOT NULL ,

`postTXT` TEXT NOT NULL ,

PRIMARY KEY ( `postID` )

)

评论查看页:COMMENTS.PHP,具体内容为(有用户名和密码的在实际工作中要改变):

$dbcnx = mysql_connect("localhost", "username", "password")

mysql_select_db("comments")

接下来需要对表进行查询,并且把ID 按Descending: 顺序排序:

$result = mysql_query("SELECT * FROM comtbl ORDER BY postID DESC")

if (!$result) {

echo("<b>Error performing query: " . mysql_error() . "</b>")

exit()

}

在这里因为要读出好多条记录,所以用循环来读,具体程序如下:

while ($row = mysql_fetch_array($result) ) {

$msgTxt = $row["postTXT"]

$msgId = $row["postID"]

$SigName = $row["posterNAME"]

$SigDate = $row["postTIME"]

$msgTitle = $row["postTITLE"]

$url = $row["posterEMAIL"]

现在到了最关键的一步了,也是困难的一步: 因为在这里用到MySQL's TIMESTAMP 函数 (功能是可以自动的饿把时间添加到一个表中),并且需要取得时间的字符串,使用字符串函数substr() ( $yr 表示年, $mo 表示月, 等等):

$yr = substr($SigDate, 2, 2)

$mo = substr($SigDate, 4, 2)

$da = substr($SigDate, 6, 2)

$hr = substr($SigDate, 8, 2)

$min = substr($SigDate, 10, 2)

还需要对上述代码的功能加以扩充来实现12或24小时表示或者用 AM和PM来表示上下午,代码如下:

if ($hr >"11") {

$x = "12"

$timetype = "PM"

$hr = $hr - 12

}else{

$timetype = "AM"

}

另外,当评论者要是留下Email 的话,我们可以在这里来建立一个连接实现联系发评论的人.代码如下:

if (!$url) {

$url = "#"

}else{

$stat = $url

$url = "mailto:" . $url . ""

}

最后,我们可以按行来显示数据,并且关闭循环,最终的显示代码如下:

echo("<p><b>$msgTitle</b>

$msgTxt<br>

<div align=right>$hr:$min $timetype | $mo/$da/$yr | $msgId, <a href='$url'>$SigName</a></div></p>")

}

<p><b>Message Title</b>

Text within the message, blah blah<br>

<div align=right>Hour:Minute AM/PM | Month/Day/Year | Message ID, <a href='mailto:test@test.com'>Name with email link</a></div></p>

表单处理的程序: COMMENTADD.PHP

首先我们设置一些变量,然后通过表单把变量获得的数据提交到后台数据库中,并且请记住用户名和密码。

$assume = $_POST['assume']

$posterEMAIL = $_POST['postemail']

$postTXT = $_POST['posttxt']

$posterNAME = $_POST['poster']

$postTITLE = $_POST['posttitle']

if ($assume == "true") {

$dbcnx = mysql_connect("localhost", "username", "password")

mysql_select_db("comments")

$sql = "INSERT INTO comtbl SET posterNAME='$posterNAME', posterEMAIL='$posterEMAIL',

postTXT='$postTXT', postTITLE='$postTITLE'"

if (mysql_query($sql)) {

echo("<P>Your comment has been added</P>")

} else {

echo("<P>Error adding entry: " . mysql_error() . "</P>")

}

}

提交了自己的评论之后还要有跳转的功能,下面的Javascript代码就可以实现跳转到指定的页面。

<script language=javascript>

<!--

location.href="comments.php"

//-->

</script>

下面是具体的COMMENTFORM.HTML代码,通过下面的内容,可以让发表评论者发表评论,然后通过提交可以把数据提交到commentadd.php里面来实现数据的在线提交。

<form action="commentadd.php" method=post>

<input type="text" name="poster" size="23" value="name"><br />

<input type="text" name="posttitle" size="23" value="name"><br />

<input type="text" name="postemail" size="23" value="user@email.com"><br />

<textarea cols=44 rows=6 name="posttxt" size=24 wrap="VIRTUAL">message<br />

<input type=hidden name=assume value=true>

<input type="submit" value="submit">

下面是处理评论的代码 comments.php:

<?

$dbcnx = mysql_connect("localhost", "username", "password")

mysql_select_db("comments")

$result = @mysql_query("SELECT * FROM comtbl ORDER BY postID DESC")

if (!$result) { echo("<b>Error performing query: " . mysql_error() . "</b>")

exit()

}

while ($row = mysql_fetch_array($result) ) {

$msgTxt = $row["postTXT"]

$msgId = $row["postID"]

$SigName = $row["posterNAME"]

$SigDate = $row["postTIME"]

$msgTitle = $row["postTITLE"]

$url = $row["posterEMAIL"]

$yr = substr($SigDate, 2, 2)

$mo = substr($SigDate, 4, 2)

$da = substr($SigDate, 6, 2)

$hr = substr($SigDate, 8, 2)

$min = substr($SigDate, 10, 2)

if ($hr >"11") {

$x = "12"

$timetype = "PM"

$hr = $hr - 12

}else{

$timetype = "AM"

}

if (!$url) {

$url = "#"

}else{

$stat = $url

$url = "mailto:" . $url . ""

}

echo("<p><b>$msgTitle</b>$msgTxt<br><div align=right>

$hr:$min $timetype | $mo/$da/$yr | $msgId, <a href='$url'>$SigName</a></div></p>")

}

?>

下面是 commentadd.php:

<?

$assume = $_POST['assume']

$posterEMAIL = $_POST['postemail']

$postTXT = $_POST['posttxt']

$posterNAME = $_POST['poster']

$postTITLE = $_POST['posttitle']

if ($assume == "true") {

$dbcnx = mysql_connect("localhost", "username", "password")

mysql_select_db("comments")

$sql = "INSERT INTO comtbl SET posterNAME='$posterNAME', posterEMAIL='$posterEMAIL',

postTXT='$postTXT', postTITLE='$postTITLE'"

if (mysql_query($sql)) {

echo("Your comment has been added")

} else {

echo("Error adding entry: " . mysql_error() . "")

}

}

?>

<script language=javascript>

<!--

location.href="comments.php"

//-->

</script>

HTML 代码留言板 一个超简陋的留言版 免费留言板 //评论内容不能保存 因为涉及到数据库

<script>

function Ok_OnClick(event)

{

if(document.getElementsByName("textName")[0].value == ""){

alert("请输入内容")

return

}//getElementById

var table

var tableList = document.getElementsByTagName("TABLE")

for(var i = 0 i <tableList.length i++) {

if(tableList[i].name == "tableName") {

table = tableList[i]

break

}

}

var value = document.getElementsByName("textName")[0].value

var index = table.rows.length

table.insertRow(index)

table.rows(index).insertCell(0)

table.rows(index).cells(0).innerText = value

document.getElementsByName("textName")[0].value = ""

}

</script>

<HTML>

<HEAD>

<META http-equiv="Content-Type" content="text/htmlcharset=gb2312">

<TITLE>留言版</TITLE>

<STYLE>

td{width:20%height:20pxborder-bottom:1px solid blackborder-right:1px solid blackcursor:default}

div{font-size:13px}

th{height:20pxfont-size:12pxfont-weight:normalborder-bottom:2px solid blackbackground-color:#CCCCCC}

table{border:1px solid blackfont-size:13px}

</STYLE>

</HEAD>

<BODY oncontextmenu="return false"">

<TABLE name="tableName" width="70%" align="center" cellpadding="0" cellspacing="0">

<TR>

<TH colspan="4" style="">留言版</TH>

</TR>

<TR>

<TD>呵呵,一个超简陋的留言版 ^_^</TD>

</TR>

</TABLE>

<BR>

<div align="center">

<textarea rows="2" name="textName" id="textId" cols="20"

style="width: 70%clip: rect(0pt, 47pt, 18pt, 0pt)font-family: 宋体font-size: 10ptfont-weight: normalfont-style: normaltext-align: leftvertical-align: middletext-indent: 0color: #000000background-attachment: fixedbackground-color: #EEEEEEborder: 1px solid #0xf8f8f8">

</textarea>

</div>

<BR>

<div align="center">

<input type="button" value="提交" onclick="return Ok_OnClick(window.event)"

style="align:center width:60 height: 21clip: rect(0pt, 47pt, 18pt, 0pt)font-family: 宋体font-size: 10ptfont-weight: normalfont-style: normalcursor: handtext-align: centervertical-align: middletext-indent: 0color: #000000background-attachment: fixedbackground-color: #d8d8d8border: 1px solid #59b4f7">

<!--position: absoluteleft: 342top: 184-->

</div>

</BODY>

</HTML>


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原文地址: http://outofmemory.cn/zaji/7331281.html

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