好吧先上图,看看,这是 ajax的留言板噢.有瀑布流效果,哈
1.今天学习到了 jquery的ajax,直接上代码
[php] / JavaScript Document
$(document).ready(function(e) {
loadHiglight();//载入高亮特效
$("#submit").click(function() { //“留言”按钮单击事件
//获取用户名称
var strUsetName = $("#userName").val();
//获取输入留言内容
var strContent = $("#content").val();
//获取输入邮箱
var strEmail = $("#email").val();
//开始发送数据
$.ajax({
url: 'index.php?m=index&a=add',
type: 'POST',
dataType: 'json',
data: {
userName: strUsetName,
content: strContent,
email: strEmail
},
success: function(json, textStatus, xhr) {
if (json.state=='ok') {
alert('操作提示,留言成功!');
//alert();
var data=json.data[0];
var strTag=createTag(data.userName,data.content,data.time);
$(strTag).prependTo('div #liuyan');
//$("Hello World!").prependTo("p");
}else{
alert('操作提示,留言失败!\n错误信息:'+json.error);
}
}
})
});
//动态载入留言
loadMore();
});
//监视滚动条滚动
$(window).scroll(function() {
// 当滚动到最底部以上100像素时, 加载新内容
if ($(document).height() - $(this).scrollTop() - $(this).height()
loadMore();
};
});
fy = 0;
function loadMore() {
fy++;
//alert(fy);
$.getJSON("index.php?m=index&a=data&page=" + fy + "&rand=" + Math.random(), function(json) {
for (var i = 0; i
//alert(json[i]['userName']);
//content = '
//content='
//alert(content);
$("div #liuyan").append(createTag(json[i]['userName'],json[i]['content'],json[i]['time']));
loadHiglight();
};
});
}
function loadHiglight() {//为了ajax后重载特效
$user = $("div .user");
$text = $("div .text");
$("div .content").each(function(index) {
$(this).mousemove(function() {
$user.eq(index).css("color", "#0A8CD2");
// $user.eq(index).css("background","#FFE6AD");
// $text.eq(index).css("background","#FFFDF6");
}).mouseout(function() {
$user.eq(index).css("color", "#000");
// $user.eq(index).css("background","#E6F0F9");
// $text.eq(index).css("background","#F8FBFD");
});
});
}
function createTag(usetName, content, time) {
var strTag = '
return strTag;
}
function getLocalTime(nS) {
return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
}
// JavaScript Document
$(document).ready(function(e) {
loadHiglight();//载入高亮特效
$("#submit").click(function() { //“留言”按钮单击事件
//获取用户名称
var strUsetName = $("#userName").val();
//获取输入留言内容
var strContent = $("#content").val();
//获取输入邮箱
var strEmail = $("#email").val();
//开始发送数据
$.ajax({
url: 'index.php?m=index&a=add',
type: 'POST',
dataType: 'json',
data: {
userName: strUsetName,
content: strContent,
email: strEmail
},
success: function(json, textStatus, xhr) {
if (json.state=='ok') {
alert('操作提示,留言成功!');
//alert();
var data=json.data[0];
var strTag=createTag(data.userName,data.content,data.time);
$(strTag).prependTo('div #liuyan');
//$("Hello World!").prependTo("p");
}else{
alert('操作提示,留言失败!\n错误信息:'+json.error);
}
}
})
});
//动态载入留言
loadMore();
});
//监视滚动条滚动
$(window).scroll(function() {
// 当滚动到最底部以上100像素时, 加载新内容
if ($(document).height() - $(this).scrollTop() - $(this).height()
loadMore();
};
});
fy = 0;
function loadMore() {
fy++;
//alert(fy);
$.getJSON("index.php?m=index&a=data&page=" + fy + "&rand=" + Math.random(), function(json) {
for (var i = 0; i
//alert(json[i]['userName']);
//content = '
//content='
//alert(content);
$("div #liuyan").append(createTag(json[i]['userName'],json[i]['content'],json[i]['time']));
loadHiglight();
};
});
}
function loadHiglight() {//为了ajax后重载特效
$user = $("div .user");
$text = $("div .text");
$("div .content").each(function(index) {
$(this).mousemove(function() {
$user.eq(index).css("color", "#0A8CD2");
// $user.eq(index).css("background","#FFE6AD");
// $text.eq(index).css("background","#FFFDF6");
}).mouseout(function() {
$user.eq(index).css("color", "#000");
// $user.eq(index).css("background","#E6F0F9");
// $text.eq(index).css("background","#F8FBFD");
});
});
}
function createTag(usetName, content, time) {
var strTag = '
return strTag;
}
function getLocalTime(nS) {
return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
}请求的方法是
[php] function data()
{
//引入分页类
include "page.class.php";
//得到data表的数据数量
$rows = $this->db->count('select * from data');
//创建分页对象
$page = new Page($rows, 5, "");
$list=$this->db
->order('id DESC')
//->table('data')
->limit($page->getLimit())
->select();
/*
echo "
";<br> var_dump($list);<br> echo "";
*/
echo json_encode($list);
exit();
}
function data()
{
//引入分页类
include "page.class.php";
//得到data表的数据数量
$rows = $this->db->count('select * from data');
//创建分页对象
$page = new Page($rows, 5, "");
$list=$this->db
->order('id DESC')
//->table('data')
->limit($page->getLimit())
->select();
/*
echo "
";<br> var_dump($list);<br> echo "";
*/
echo json_encode($list);
exit();
}
这样就实现了 瀑布流效果咯,有点缺点是 如果加载到 最后但是却没提示的噢,哈哈哈哈,
[php] function add(){
//添加后返回 影响条数,如果大于0就说明添加成功
$json['state']='no';
if (empty($_POST['userName'])) {
$json['error']='没有输入用户名';
}elseif(empty($_POST['content'])){
$json['error']='没有输入留言内容';
}elseif(empty($_POST['email'])){
$json['error']='没有输入邮箱';
}else{
isset($_POST['content'])?$_POST['content']=nl2br($_POST['content']):"";
$_POST['time']=time();
if($this->db->data($_POST)->add()>0){
/*
echo "添加成功";
// echo "<script>location.reload()</script>";//防止刷新后的表单的重复提交
Header("HTTP/1.1 303 See Other");
Header("Location: "); //转向到根目录
exit;
*/
$json['state']='ok';
$json['data']=$this
->db
->table('data')
->where('id='.$this->db->last_insert_id())
->select();
}else {
$json['error']=$this->db->error();
//die($this->db->error());//添加失败输出错误信息
}
}
echo json_encode($json);
//var_dump($_POST);
}
function add(){
//添加后返回 影响条数,如果大于0就说明添加成功
$json['state']='no';
if (empty($_POST['userName'])) {
$json['error']='没有输入用户名';
}elseif(empty($_POST['content'])){
$json['error']='没有输入留言内容';
}elseif(empty($_POST['email'])){
$json['error']='没有输入邮箱';
}else{
isset($_POST['content'])?$_POST['content']=nl2br($_POST['content']):"";
$_POST['time']=time();
if($this->db->data($_POST)->add()>0){
/*
echo "添加成功";
// echo "<script>location.reload()</script>";//防止刷新后的表单的重复提交
Header("HTTP/1.1 303 See Other");
Header("Location: "); //转向到根目录
exit;
*/
$json['state']='ok';
$json['data']=$this
->db
->table('data')
->where('id='.$this->db->last_insert_id())
->select();
}else {
$json['error']=$this->db->error();
//die($this->db->error());//添加失败输出错误信息
}
}
echo json_encode($json);
//var_dump($_POST);
}这是留言部分的代码,哈哈,这样就可以留言后直接就在页面看到效果,而不用刷新浏览器囖,效果漂亮多了 jquery+ajax就是牛X.哈
2.今天学习到的php 函数
[php] json_encode();
说明
返回 value
值的 JSON 形式
empty() 如果值是空的话,返回真,有值就返回假,
time() 取得时间戳
mysql_insert_id() 返回上一次操作自增字段的id
json_encode(); 说明string json_encode ( mixed $value [, int $options = 0 ] )返回 value 值的 JSON 形式empty() 如果值是空的话,返回真,有值就返回假,
time() 取得时间戳
mysql_insert_id() 返回上一次操作自增字段的id
3.今天学习到的 javascript函数,这函数用于转换时间戳.
[javascript] function getLocalTime(nS) {
return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
}
jquery的append()用于加载到标签内最后面的HTML
prependTo()加载HTML代码到 标签的最前面
function getLocalTime(nS) {
return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
}
jquery的append()用于加载到标签内最后面的HTML
prependTo()加载HTML代码到 标签的最前面
4.今天得到的经验ajax加载网页标签,后jquery特效会消失,所以在ajax加载网页标签后,要重新绑定 jquery的事件和函数。不然特效就没咯。
[javascript]
<PRE class=javascript name="code">

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