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我正在为JS和Ajax中的大学项目编写留言簿。我已经能够发表留言条目。现在我的问题是,我不知道如何再次删除它们。JavaScript/AJAX想要从留言簿条目中删除html类
我的PHP文件看起来像
<?php
###########################################################
/*
Developer: Not Important
Version: \t 1.0
Release: \t 08.12.2014
*/
###########################################################
error_reporting(0);
include("config.php");
if ($_REQUEST["do"]=='add') {
\t
\t $sql = "INSERT INTO ".$SETTINGS["data_table"]." SET date_time=now(), name='".mysql_real_escape_string($_REQUEST["name"])."', email='".mysql_real_escape_string($_REQUEST["email"])."', comment='".mysql_real_escape_string($_REQUEST["comment"])."'";
\t $sql_result = mysql_query ($sql, $connection) or die ('request "Could not execute SQL query" '.$sql);
}
?>
</div>
<form id="GuestBookFrm" name="GuestBookFrm" onsubmit="return false;">
<table width="100%" border="0" cellspacing="0" cellpadding="5">
<tr>
<td colspan="2"><strong>Gästebuch Eintrag schreiben</strong></td>
</tr>
<tr>
<td>Name</td>
<td><label>
<input type="text" name="your_name" id="your_name" />
</label></td>
</tr>
<tr>
<td>Email</td>
<td><input type="text" name="email" id="email" /></td>
</tr>
<tr>
<td>Kommentar</td>
<td><label>
<textarea name="comment" id="comment" rows="5"></textarea>
</label></td>
</tr>
<tr>
<td> </td>
<td><label>
<input type="button" name="button" id="button" value="Senden" onclick="SubmitComment()" />
\t <input type="reset" name="reset" id="reset" value="Reset" />
</label></td>
</tr>
</table>
</form>
<div id="Comments">
<?php
$sql = "SELECT * FROM ".$SETTINGS["data_table"]." ORDER BY id DESC";
$sql_result = mysql_query ($sql, $connection) or die ('request "Could not execute SQL query" '.$sql);
while ($row = mysql_fetch_assoc($sql_result)) {
\t echo "<div><ul><li><h2>".stripslashes($row["name"])."</h2></li>";
\t echo "<li><span>gepostet am ".$row["date_time"]."</span><a class=\"delete\" href=\"#\">Löschen</a> <a class=\"edit\" href=\"#\">Editieren</a></li>";
\t echo "<li><p>".stripslashes(nl2br($row["comment"]))."</p></li></ul></div>";
}
?>
和我的JavaScript看起来像这样:
var bustcachevar=1; //bust potential caching of external pages after initial request? (1=yes, 0=no)
var bustcacheparameter="";
function createRequestObject(){
\t try \t {
\t \t xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
\t } \t catch(e) \t {
\t \t alert('Sorry, but your browser doesn\'t support XMLHttpRequest.');
\t };
\t return xmlhttp;
};
function ajaxpage(url, containerid){
\t var page_request = createRequestObject();
\t
\t if (bustcachevar) bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
\t page_request.open('GET', url+bustcacheparameter, true)
\t page_request.send(null)
\t page_request.onreadystatechange=function(){
\t \t loadpage(page_request, containerid)
\t }
}
function loadpage(page_request, containerid){
\t if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)) {
\t document.getElementById(containerid).innerHTML=page_request.responseText;
\t };
}
function LoadComments() {
\t ajaxpage("guestbook.php", "GuestBook");
}
function SubmitComment() {
\t if (document.GuestBookFrm.your_name.value !== '' && document.GuestBookFrm.email.value !== '' && document.GuestBookFrm.comment.value !== '') {
\t \t ajaxpage("guestbook.php?do=add&name=" + encodeURI(document.GuestBookFrm.your_name.value) + "&email=" + encodeURI(document.GuestBookFrm.email.value) + "&comment=" + encodeURI(document.GuestBookFrm.comment.value), "GuestBook");
\t } else {
\t \t alert ("Fill in all fields.");
\t }
\t
}
LoadComments();
我的SQL DA tabase看起来很简单:
CREATE TABLE IF NOT EXISTS `guestbook` (
`id` int(11) NOT NULL auto_increment,
`date_time` datetime NOT NULL,
`name` varchar(250) NOT NULL,
`email` varchar(250) NOT NULL,
`comment` text NOT NULL,
PRIMARY KEY (`id`)
)
正如你可以在我的PHP文件中看到,有具有删除和编辑按钮与类“线
echo "<li><span>gepostet am ".$row["date_time"]."</span><a class=\"delete\" href=\"#\">Löschen</a> <a class=\"edit\" href=\"#\">Editieren</a></li>";
删除“和类”编辑“。现在我正在努力工作,我可以再次删除留言簿条目。如果我想删除或不删除,我不需要任何确认。我只需要点击删除,然后它应该消失。
有没有人可以提供的任何代码来帮助我使它工作?
问候
你搜索**删除**声明http://dev.mysql.com/doc/refman/5.0/en/delete.html – donald123 2014-12-19 10:40:34
我认为你需要创建另一个案例if($ _REQUEST [“do” ] =='add'){用于删除,即使sql为@ donald123说 – 2014-12-19 10:40:58
先生“不重要”,请停止使用不推荐使用的'mysql_ *'函数。改为使用PDO/MySQLi – Raptor 2014-12-19 10:55:27