HTML
首先我们放置一个评论表单和显示评论列表#comments
<h3>发表评论</h3> <p>昵称:</p> <p><input type="text" class="input" id="user" /></p> <p>评论内容:</p> <p><textarea class="input" id="txt" style="width:100%; height:80px">
jQuery
接着调用评论列表,并且通过Ajax发布评论:
$(function() { var comments = $("#comments"); $.getJSON("ajax.php", function(json) { $.each(json, function(index, array) { var txt = "<p><strong>" + array["user"] + "</strong>:" + array["comment"] + "<span>" + array["addtime"] + "</span></p>"; comments.append(txt); }); }); $("#add").click(function() { var user = $("#user").val(); var txt = $("#txt").val(); $.ajax({ type: "POST", url: "comment.php", data: "user=" + user + "&txt=" + txt, success: function(msg) { if (msg == 1) { var str = "<p><strong>" + user + "</strong>:" + txt + "<span>刚刚</span></p>"; comments.append(str); $("#message").show().html("发表成功!").fadeOut(1000); $("#txt").attr("value", ""); } else { $("#message").show().html(msg).fadeOut(1000); } } }); }); });
Mysql
最后附上表comments结构:
CREATE TABLE `comments` ( `id` int(11) NOT NULL auto_increment, `user` varchar(30) NOT NULL, `comment` varchar(200) NOT NULL, `addtime` datetime NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;